セウォル号沈没事故で生き残った生徒の卒業式に、犠牲者の親が贈ったメッセージ（全文）

JINDO-GUN, SOUTH KOREA - APRIL 16: In this screen shot handout of helicopter camera provided by the Republic of Korea Coat Guard, the ferry is seen sinking as the rescue work continues off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this screen shot handout of helicopter camera provided by the Republic of Korea Coat Guard, the ferry is seen sinking as the rescue work continues off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Handout/The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the South Korean Navy, the ferry is seen sinking as the rescue work continues off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by The South Korean Navy via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this screen shot handout of helicopter camera provided by the Republic of Korea Coat Guard, the ferry is seen sinking off as the rescue work continues the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, rescue work by members of the Republic of Korea Coast Guard continues around the ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, rescue work by members of the Republic of Korea Coast Guard continues around the ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, rescue work by members of the Republic of Korea Coast Guard continues around the ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, a passenger ferry sinks off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, rescue work by members of the Republic of Korea Coast Guard continues around the ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, passengers are rescued by the Republic of Korea Coast Guard from a ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, a passenger ferry sinks off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, rescue work by members of the Republic of Korea Coast Guard continues around the ferry sinking off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, a passenger ferry sinks off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: A Woman cries at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives weep as they wait for missing passengers of a sunken ferry at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 459 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives weep as they wait for missing passengers of a sunken ferry at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 459 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives of missing people wait at a Jindo port on April 16, 2014 in Jindo-gun, South Korea. Two people are dead, and more than ninety are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives check the survivor lists as they wait for missing passengers of a sunken ferry at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 459 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: Relatives check the survivor lists as they wait for missing passengers of a sunken ferry at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 459 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: A relative waits for missing passengers of a sunken ferry at Jindo port on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 459 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: (SOUTH KOREA OUT) In this handout provided by Donga Daily, The Republic of Korea Coast Guard work at the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Park Young-Chul-Donga Daily via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: (SOUTH KOREA OUT) In this handout provided by Donga Daily, The Republic of Korea Coast Guard work at the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Park Young-Chul-Donga Daily via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: (SOUTH KOREA OUT) In this handout provided by Donga Daily, The Republic of Korea Coast Guard work at the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by Park Young-Chul-Donga Daily via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 16: In this handout image provided by the Republic of Korea Coast Guard, the rescue work by members of the Republic of Korea Coast Guard continues around the site of ferry sinking accident off the coast of Jindo Island on April 16, 2014 in Jindo-gun, South Korea. Four people are confirmed dead and almost 300 are reported missing. The ferry identified as the Sewol is reported to have been carrying around 470 passengers, including students and teachers, as it travelled to Jeju island. (Photo by The Republic of Korea Coast Guard via Getty Images)

Coast guard members search for passengers near a South Korean ferry (C) that capsized on its way to Jeju island from Incheon, at sea some 20 kilometres off the island of Byungpoong in Jindo on April 17, 2014. South Korean rescue teams, including elite navy SEAL divers, raced to find up to 293 people missing from a capsized ferry carrying 459 passengers and crew -- mostly high school students bound for a holiday island. AFP PHOTO AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

Coast guard members search for passengers near a South Korean ferry (C) that capsized on its way to Jeju island from Incheon, at sea some 20 kilometres off the island of Byungpoong in Jindo on April 17, 2014. South Korean rescue teams, including elite navy SEAL divers, raced to find up to 293 people missing from a capsized ferry carrying 459 passengers and crew -- mostly high school students bound for a holiday island. AFP PHOTO AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

Coast guard members search for passengers near a South Korean ferry (C) that capsized on its way to Jeju island from Incheon, at sea some 20 kilometres off the island of Byungpoong in Jindo on April 17, 2014. South Korean rescue teams, including elite navy SEAL divers, raced to find up to 293 people missing from a capsized ferry carrying 459 passengers and crew -- mostly high school students bound for a holiday island. AFP PHOTO AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

Coast guard members search for passengers near a South Korean ferry (C) that capsized on its way to Jeju island from Incheon, at sea some 20 kilometres off the island of Byungpoong in Jindo on April 17, 2014. South Korean rescue teams, including elite navy SEAL divers, raced to find up to 293 people missing from a capsized ferry carrying 459 passengers and crew -- mostly high school students bound for a holiday island. AFP PHOTO AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

Coast guard members search for passengers near a South Korean ferry (C) that capsized on its way to Jeju island from Incheon, at sea some 20 kilometres off the island of Byungpoong in Jindo on April 17, 2014. South Korean rescue teams, including elite navy SEAL divers, raced to find up to 293 people missing from a capsized ferry carrying 459 passengers and crew -- mostly high school students bound for a holiday island. AFP PHOTO AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo port on April 17, 2014 in Jindo-gun, South Korea. At least six people are reported dead, with 290 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo port on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives weep as they wait for missing passengers of a sunken ferry at Jindo port on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo port on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talk with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: South Korean President Park Geun-Hye talks with relatives of missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 17: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 17, 2014 in Jindo-gun, South Korea. Six are dead, and 290 are missing as reported. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean team search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean rescue teams work near to the buoys installed to mark the position of the sunken ferry on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean Navy rescue teams work near to the buoys installed to mark the position of the sunken ferry on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean Navy rescue teams search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean team search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean rescue teams work near to the buoys installed to mark the position of the sunken ferry on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: A rescue diver swims near the buoys installed to mark the position of the sunken ferry at Jindo port on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean Navy rescue teams search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean Navy rescue teams try to install buoys to mark the postion of the sunken ferry at Jindo port on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: A South Korean team searches for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: A South Korean team searches for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: South Korean Navy rescue teams install buoys to mark the position of the sunken ferry at Jindo port on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: A giant offshore crane arrives near to the buoys installed to mark the postion of the sunken ferry at the site of the ferry off the coast of Jindo Island on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 18: Relatives wait for missing passengers of a sunken ferry at Jindo gymnasium on April 18, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 19: Oil spill from the sunken ferry off the coast of Jindo Island on April 19, 2014 in Jindo-gun, South Korea. At least twenty nine people are reported dead, with 267 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 19: Divers with the South Korean Navy search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 19, 2014 in Jindo-gun, South Korea. At least twenty nine people are reported dead, with 267 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 19: Divers with the South Korean Navy search for missing passengers at the site of the sunken ferry off the coast of Jindo Island on April 19, 2014 in Jindo-gun, South Korea. At least twenty nine people are reported dead, with 267 still missing. The ferry identified as the Sewol was transporting about 475 passengers, including students and teachers, travelling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

A relative strikes a police spokesman during a briefing on the ongoing rescue and recovery operations of the sunken South Korean ferry 'Sewol', at a gymnasium used as a gathering point for family members of missing passengers, in Jindo on April 19, 2014. Investigators arrested the captain accused of abandoning the South Korean ferry that capsized three days ago with 476 people on board, as divers finally accessed the submerged vessel and spotted bodies inside. AFP PHOTO / ED JONES (Photo credit should read ED JONES/AFP/Getty Images)

ANSAN, SOUTH KOREA - APRIL 18: Friends, relatives and neighbors gather for a candlelight vigil at Danwon High School on April 18, 2014 in Ansan, South Korea. 325 students and 15 teachers of Danwon High School on a school trip were among the 477 passengers on board the ferry capsized off of Jindo Island in South Korea on April 16, 2014. (Photo by Shannon Jensen/Getty Images)

ANSAN, SOUTH KOREA - APRIL 18: Two students read the news on a phone at the edge of a press conference at Danwon High School announcing the vice principal's suicide on April 18, 2014 in Ansan, South Korea. The vice principal reportedly committed suicide after being rescued from the capsized ferry. 325 students and 15 teachers of Danwon High School on a school trip were among the 477 passengers on board the ferry capsized off of Jindo Island in South Korea on April 16, 2014. (Photo by Shannon Jensen/Getty Images)

ANSAN, SOUTH KOREA - APRIL 18: Students' belongings remain on their desks as they left them in a second year classroom at Danwon High School on April 18, 2014 in Ansan, South Korea. 325 second-year students and 15 teachers of Danwon High School on a school trip were among the 477 passengers on board the ferry that capsized off of Jindo Island in South Korea on April 16, 2014. (Photo by Shannon Jensen/Getty Images)

ANSAN, SOUTH KOREA - APRIL 18: Flowers line one of the hallways of Ansan Hospital's funeral home in honor of two deceased students on April 18, 2014 in Ansan, South Korea. Students have come to pay their respects. Korean funerals last for three days. 325 students and 15 teachers of Danwon High School on a school trip were among the 477 passengers on board the ferry capsized off of Jindo Island in South Korea on April 16, 2014. (Photo by Shannon Jensen/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry scuffle with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry grieve as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry scuffle with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry scuffle with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry scuffle with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least twenty eight people are reported dead, with 268 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: A relative of missing passengers from the sunken ferry scuffles with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Relatives of missing passengers from the sunken ferry scuffle with police as they try to go to the presidential house on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Rescue works carry a victim of the sunken ferry off the coast of Jindo Island on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Rescue works carry a victim of the sunken ferry off the coast of Jindo Island on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 20: Rescue works carry a victim of the sunken ferry off the coast of Jindo Island on April 20, 2014 in Jindo-gun, South Korea. At least forty six people are reported dead, with 256 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

The ship provided support at the request of South Korea to aid in the rescue efforts of the passengers of the ferry Sewol that capsized ...

JINDO-GUN, SOUTH KOREA - APRIL 21: A relative checks lists of dead of the sunken ferry at Jindo port on April 21, 2014 in Jindo-gun, South Korea. At least sixty four people are reported dead, with 238 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

Description 131004-N-TX154-039 BUSAN, Republic of Korea (Oct. guided-missile destroyer USS Preble (DDG 88) as the ship enters port in Busan. ...

JINDO-GUN, SOUTH KOREA - APRIL 21: Relatives wait for missing passengers of a sunken ferry at Jindo port on April 21, 2014 in Jindo-gun, South Korea. At least sixty four people are reported dead, with 238 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

JINDO-GUN, SOUTH KOREA - APRIL 21: A relative weeps as she waits for missing passengers of a sunken ferry at Jindo port on April 21, 2014 in Jindo-gun, South Korea. At least sixty four people are reported dead, with 238 still missing. The ferry identified as the Sewol was carrying about 470 passengers, including the students and teachers, traveling to Jeju Island. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students from Danwon high school pay tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A woman weeps after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A man weeps after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A woman pays a tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students from Danwon high school pay tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students from Danwon high school pay tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students from Danwon high school weep after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A funeral service employee puts up a portrait of a victim of sunken passenger at group memorial altar at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A woman weeps as she read messages wishing for the safe return of missing passengers of sunken passengers ship at Danwon high school on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 150, and more than 150 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A woman attach messages wishing for the safe return of missing passengers of sunken passengers ship at Danwon high school on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 150, and more than 150 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A woman weeps as she read messages wishing for the safe return of missing passengers of sunken passengers ship at Danwon high school on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 150, and more than 150 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: South Korean mouners pay a tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: South Korean mourners weep after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: South Korean students weep after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: South Korean students weep after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: South Korean mourners weep after tribute at a group memorial altar for victims of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students attach messages wishing for the safe return of missing passengers of sunken passengers ship at the Ansan Olympic Memorial Hall on April 23, 2014 in Ansan, South Korea. At the altar, Friends and relatives are able to pay tribute to those who have passed in the April 16 ferry disaster off of Jindo Island in South Korea. The confirmed death toll now reached 130, and more than 170 people are still missing, as reported. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students and citizens hold candles as they pray for the safe return of missing passengers who were travelling aboard south Korean ferry the Sewol, which sank off the coast of Jindo Island, on April 23, 2014 in Ansan, South Korea. The confirmed death toll is reported to have risen to 150, with more than 150 people still missing. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: A boy attends a candlelit vigil for the safe return of missing passengers who were travelling aboard south Korean ferry the Sewol, which sank off the coast of Jindo Island, on April 23, 2014 in Ansan, South Korea. The confirmed death toll is reported to have risen to 150, with more than 150 people still missing. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students and citizens hold candles as they pray for the safe return of missing passengers who were travelling aboard south Korean ferry the Sewol, which sank off the coast of Jindo Island, on April 23, 2014 in Ansan, South Korea. The confirmed death toll is reported to have risen to 150, with more than 150 people still missing. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 23: Students and citizens hold candles as they pray for the safe return of missing passengers who were travelling aboard south Korean ferry the Sewol, which sank off the coast of Jindo Island, on April 23, 2014 in Ansan, South Korea. The confirmed death toll is reported to have risen to 150, with more than 150 people still missing. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - APRIL 25: US President Barack Obama, and officials pay a silent tribute for victims of South Korea's sunken ferry 'Sewol,' during a meeting with South Korean President Park Geun-Hye at the presidential Bule House on April 25, 2014 in Seoul, South Korea. The U.S. President is on an Asian tour where he is due to visit Japan, South Korea, Malaysia and the Philippines. (Photo by Jung Yeon - Je-Pool/Getty Images)

SEOUL, SOUTH KOREA - APRIL 27: (SOUTH KOREA OUT) South Korean Prime Minister Chung Hong-Won offering his resignation at the Central Government Complex on April 27, 2014 in Seoul, South Korea. Chung Hong-won offered his resignation responding to the criticism over the government's response to the 16 April ferry accident. (Photo by Park Young-Dae-Donga Daily via Getty Images)

SEOUL, SOUTH KOREA - APRIL 27: (SOUTH KOREA OUT) South Korean Prime Minister Chung Hong-Won leaves from the Central Government Complex on April 27, 2014 in Seoul, South Korea. Chung Hong-won offered his resignation responding to the criticism over the government's response to the 16 April ferry accident. (Photo by Park Young-Dae-Donga Daily via Getty Images)

ANSAN, SOUTH KOREA - APRIL 29: South Koreans pay a tribute at a group memorial altar for victims of the sunken ferry Sewol at the Hwarang Recreation Park on April 29, 2014 in Ansan, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 29: Relatives of a passenger of the sunken ferry Sewol weep as they pay tribute to the victims at Ansan city's official memorial altar at the Hwarang Recreation Park on April 29, 2014 in Ansan, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 29: South Koreans pay a tribute at a group memorial altar for victims of the sunken ferry Sewol at the Hwarang Recreation Park on April 29, 2014 in Ansan, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 29: Funeral service employees hold portraits of victims of the sunken ferry Sewol at a group memorial altar at the Hwarang Recreation Park on April 29, 2014 in Ansan, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

ANSAN, SOUTH KOREA - APRIL 29: South Koreans pay a tribute at a group memorial altar for victims of the sunken ferry Sewol at the Hwarang Recreation Park on April 29, 2014 in Ansan, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - APRIL 29: A South Korean woman ties a yellow ribbon of hope for the safe return of missing passengers of sunken ferry Sewol on April 29, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - APRIL 29: Floral tributes rest next to candles during a candlelight vigil for victims of the sunken ferry Sewol on April 29, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - APRIL 29: South Koreans pay tribute at a group memorial altar for victims of the sunken ferry Sewol in front of city hall on April 29, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - APRIL 29: South Koreans pay tribute at a group memorial altar for victims of the sunken ferry Sewol in front of city hall on April 29, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 01: A South Korean woman ties a yellow ribbon of hope for the safe return of missing passengers of sunken ferry Sewol at a group memorial altar on May 1, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 01: People hold candles as they pray for the safe return of missing passengers and tribute to the victims of the sunken ferry Sewol on May 1, 2014 in Seoul, South Korea. No survivors have been found since 174 passengers and crew were rescued on the day of the incident, April 16. South Korea's trade union, the Federation of Korean Trade Unions (FKTU) had announced cancellation of its annual May Day rally to mourn the ferry disaster victims. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 03: People hold candles as they pray for the safe return of missing passengers and tribute to the victims of the sunken ferry Sewol on May 3, 2014 in Seoul, South Korea. On April 16 the Sewol ferry carrying 476 passengers sunk off the island of Jindo. More than 302 passengers are dead or missing and the cause of the accident is still under investigation. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 03: South Korean students pray for the safe return of missing passengers and tribute to the victims of the sunken ferry Sewol on May 3, 2014 in Seoul, South Korea. On April 16 the Sewol ferry carrying 476 passengers sunk off the island of Jindo. More than 302 passengers are dead or missing and the cause of the accident is still under investigation. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 03: People hold candles as they pray for the safe return of missing passengers and tribute to the victims of the sunken ferry Sewol on May 3, 2014 in Seoul, South Korea. On April 16 the Sewol ferry carrying 476 passengers sunk off the island of Jindo. More than 302 passengers are dead or missing and the cause of the accident is still under investigation. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - MAY 03: People hold candles as they pray for the safe return of missing passengers and tribute to the victims of the sunken ferry Sewol on May 3, 2014 in Seoul, South Korea. On April 16 the Sewol ferry carrying 476 passengers sunk off the island of Jindo. More than 302 passengers are dead or missing and the cause of the accident is still under investigation. (Photo by Chung Sung-Jun/Getty Images)