Korean coast guard search for missing sailors

The South Korean coast guard has released a video of rescue operations in a ship disaster where 46 sailors are still missing.

The video was shot on Friday when the Cheonan went down off the west coast of the peninsula, near the disputed Yellow Sea border.

The South Korean military hinted that chances for survival were slim, as the ship may only be able to contain oxygen for less than four days.

Families have requested military officials for more action. They are hoping for a miracle and have gathered at a military base in Pyeontaek where they awaited news on their missing kin.

The reasons why the ship sank remain unclear.

An investigation is underway after reports of an explosion. South Korea have ruled out any involvement from North Korea.