The UK Marine Accident Investigation Branch (MAIB) said the 22,000–gt Stena Alegra (built 1998) was forced aground at Karlskrona in October 2013 after dragging its anchor in gales of up to 76 knots.
The vessel’s bottom plating and frames were damaged, and one ballast tank and one void space were flooded.
Two tugs towed the vessel off the rocks after the weather had eased the next day.
MAIB
