Families of two people killed when a training vessel was sunk by a US Navy submarine are likely to sue the US government, according to reports.

Families have agreed to call off the search for nine people still missing after a US nuclear submarine collided with a Japanese fishing vessel.

Hope has dimmed of finding alive any of the Japanese fishermen and students missing after their ship was rammed and sunk by a submarine.

The captain of a fishing boat which sank when a US submarine smashed into it, has described the last terrifying minutes before the ship sank.

Nine people are missing after a Japanese fishing research vessel was hit by a surfacing US Navy submarine off Hawaii.