NTSB report: Ram XVIII overturning

The National Transportation Safety Board has released a Marine Accident Brief on the Nov. 18, 2018, overturning of the elevated liftboat Ram XVIII in the Gulf of Mexico some 15 miles SSE of Grand Isle, La. Five crew and 10 offshore workers abandoned the vessel and were rescued. Three personnel suffered minor injuries during the evacuation. An estimated 1,000 gallons of hydraulic oil was released. The vessel was declared a constructive total loss at an estimated cost of $1.14M. The 215-foot liftboat was owned by Aries Marine Corp. of Lafayette, La. NTSB determined that the probable cause of the overturning was the industry practice of not regularly providing liftboat operators with adequate information about the seafloor composition, which resulted in the instability of the port leg due to unidentified conditions/hazards in seabed composition near the port leg landing site. (Source: Work Boat 11/12/19) https://www.workboat.com/news/offshore/ntsb-releases-report-on-2018-gulf-liftboat-accident/