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Accident Report Detail

​Marine Accident Brief: Contact of the Cruise Ship Nippon Maru with Mooring Dolphins

Executive Summary

​At 2113 local time on December 30, 2018, the stern of the passenger vessel Nippon Maru struck mooring dolphins at a US Navy fueling wharf in Apra Harbor, Guam, while the vessel was maneuvering in a turning basin after getting under way from the harbor’s commercial port.1 No pollution or injuries were reported. Damage to the vessel was estimated at $456,080; damage to the mooring dolphins was in excess of $500,000.

Probable Cause

​The National Transportation Safety Board determines that the probable cause of the passenger vessel Nippon Maru’s contact with the mooring dolphins at the US Navy wharf D in Apra Harbor, Guam, was alcohol impairment of the master while he conned the vessel, resulting in an errant astern engine input.

Accident Location: Apra Harbor , Guam   13°27.50’ N, 144°39.91’ E
Accident Date: 12/30/2018
Accident ID: DCA19FM012

Date Adopted: 10/23/2019
NTSB Number: MAB1930
NTIS Number:  

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