-LRB- CNN -RRB- -- Four crew members died and one was missing in the frigid waters off Alaska 's Aleutian Islands after their fishing vessel sank Sunday , the U.S. Coast Guard reported . A crew member of the Alaska Ranger is taken on board the Coast Guard Cutter Munro . The Seattle , Washington-based Alaska Ranger was in 10-foot seas and winds of 30 to 35 miles per hour when it reported water was leaking into its steering gear compartment about 2:50 a.m. Sunday . The trawler had 47 people on board , said Chief Petty Officer Barry Lane , a Coast Guard spokesman . Four of those had been confirmed dead by late morning , Lane said . One person is still unaccounted for , said another Coast Guard spokesman , Lt. Eric Eggen . Watch a report from Lt. Eggen '' The 180-foot processing trawler was about 120 miles west of Dutch Harbor , in the remote Aleutian Islands , when the crew reported being `` overwhelmed by water '' and abandoned ship , Eggen said . Most of the crew had survival suits to protect them from water that was near-freezing , said Cmdr. Todd Trimpert , a Coast Guard spokesman . No cause of death was immediately known for the four crew members who died , but `` certainly , they were in the water a long time , '' Trimpert said . `` Without a survival suit , generally your survival time is less than 30 minutes , '' he said . The company that owned the ship , The Fishing Company of Alaska Inc. , identified the four who did not survive as Captain Eric Peter Jacobsen , Chief Engineer Daniel Cook , Mate David Silveira and Crewman Byron Carrillo . `` They were incredibly brave , hard-working men , '' the company said . `` Our hearts are broken . '' A nearby ship , the Alaska Warrior , rescued 25 crew members while the Coast Guard retrieved the rest of the crew , the company said . `` We do not have sufficient information to determine why the vessel foundered , '' the company said . `` We will do everything possible to find out what occurred with the hope that something can be learned that will be of value to the fishing community . '' Amy Roman , a niece of Daniel Cook , told CNN affiliate KING-TV that her uncle `` died how he wanted to . `` If you 're a fisherman , you want to die out at sea , '' she said . `` If you 're a true fisherman , this is how you want to go . '' Survivors were being taken aboard the Coast Guard cutter Munro . A helicopter and a C-130 transport plane were also taking part in the effort , the Coast Guard reported . The sinking left an unknown amount of diesel fuel on the surface of the Bering Sea , Lane said . The fishing industry is perennially among the most deadly in the United States . In 2005 , 48 fishermen died , up from 38 the year before , according to the Bureau of Labor Statistics . That made it the nation 's most dangerous occupation for the year , with a fatality rate of 118.4 per 100,000 -- nearly 30 times higher than the rate of the average worker . E-mail to a friend