Nine people are missing after a Japanese fishing research vessel was hit by a surfacing US Navy submarine off Hawaii.
A US Navy spokeswoman said a search was being conducted for nine of the 35 people aboard the boat who had not been rescued from the water nine miles off Honolulu.
The NHK television station in Japan reported that the ship was a Japanese training vessel Ehime Maru, belonging to a vocational fisheries high school in southwestern Japan.
The 35 people on board including 13 second-year high school students from the Uwajima Fisheries High School in the prefecture of Ehime.
NHK identified those aboard as 20 crew members, two teachers and 13 students from the Uwajima Fisheries High School.
The USS Greeneville was on routine operations south of Oahu when it surfaced and its stern collided with a commercial boat, said Lt Cmdr Jane Campbell, spokeswoman for Commander Navy Base, Pearl Harbor.
The boat sank after the collision and there were life rafts in the water, Lt Cmdr Campbell said. There was no visible damage to the submarine, she said.
The Greeneville, a Pearl Harbor-based nuclear-powered attack submarine, is on the scene to help in the search for survivors, she said.