Inadequate Preload Procedure Caused Vessel to Overturn

11/17/2020

​WASHINGTON (Nov. 17, 2020) — The National Transportation Safety Board issued Marine Accident Brief 20/36 Tuesday for its investigation of the Sept. 8, 2019, overturning of the liftboat Kristin Faye in the Gulf of Mexico.
One crewmember was injured evacuating the vessel. The accident resulted in the discharge of about 120 gallons of diesel fuel. The vessel was declared a constructive total loss.

The accident occurred while the self-propelled, self-elevating, liftboat Kristin Faye was elevated above the sea surface to provide service to an oil production platform in 35-feet of water about eight miles east of Venice, Louisiana. When the captain raised one of the extending/telescoping boom cranes on the vessel, the liftboat began tilting to port and overturned in less than one minute.

The liftboat Kristin Faye is seen in an elevated position alongside Platform AQ in this photo taken before the accident. 

(The liftboat Kristin Faye is seen in an elevated position alongside Platform AQ in this photo taken before the accident.
Photo by: Sanare Energy Partners, LLC)

Marine Accident Brief 20/36 notes once the 22,500-pound port crane boom was moved from its cradle (horizontal position) to the vertical position, the boom’s center of gravity shifted about 17 feet. The company’s manual did not include guidance for changes in the position of the crane booms once the vessel was elevated. Investigators determined the probable cause of the accident was the inadequate preload procedure that did not account for crane movements or the planned loads (weights) to be lifted.
The full Marine Accident Brief 20/36 is available online at https://go.usa.gov/x7yWh.

To report an incident/accident or if you are a public safety agency, please call 1-844-373-9922 or 202-314-6290 to speak to a Watch Officer at the NTSB Response Operations Center (ROC) in Washington, DC (24/7).


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