A view of the Alaska Ranger's stern, including rudders, as she sat in a Japanese drydock in 2007. USCG photo
Here is the National Transportation Safety Board's probable cause statement for the Easter 2008 sinking of the Bering Sea trawler Alaska Ranger:
The National Transportation Safety Board determines that the probable cause of the sinking of the Alaska Ranger was uncontrolled, progressive flooding due to a lack of internal watertight integrity and to a breach of the hull’s watertight envelope, likely caused by a physical rudder loss. Contributing to the loss of life was the vessel’s movement astern, which likely accelerated the flooding and caused the liferafts to swing out of reach of many crewmembers.
Click here to read the agency's 20-point conclusion plus safety recommendations.