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Accident Report Detail

Allision of Offshore Supply Vessel Connor Bordelon with Unmanned Platform South Timbalier 271A

Executive Summary

On January 23, 2015, at 0432 central standard time, the offshore supply vessel Connor Bordelon struck the unmanned natural gas platform South Timbalier 271A, which was located about 5.25 miles south of the jetty channel entrance at the vessel’s home port of Port Fourchon, Louisiana. The allision caused the pipelines attached to the platform to rupture and the natural gas and oil inside the pipelines to ignite. After the allision, the pipelines were shut down, and three good Samaritan vessels in the area applied water to put out the fire. The allision also caused a breach in the Connor Bordelon’s hull below the waterline, and the vessel began taking on water. The captain contacted the US Coast Guard to report the accident, and the Coast Guard released the Connor Bordelon from the accident area and allowed it to continue to Port Fourchon while the crew addressed the flooding. None of the 24 persons aboard the vessel were injured.

Probable Cause

The National Transportation Safety Board determines that the probable cause of the allision of the offshore supply vessel  Connor Bordelon  with the unmanned natural gas platform South Timbalier 271A was the failure of the mate on watch to ensure that the bridge team maintained a proper lookout, and his delay in changing from the autopilot to manual steering, which precluded him from taking the necessary action to prevent the allision with the platform.

Accident Location: Port Fourchon , LA   Gulf of Mexico
Accident Date: 1/23/2015
Accident ID: DCA15LM012

Date Adopted: 2/12/2016
NTSB Number: MAB-16-03
NTIS Number:  

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