Skagit and were the only two ships of their class in the WSF fleet. Together they served on the Seattle-Vashon Island route. In 2006, WSF was directed to end its passenger-only service, and in 2011Skagit and Kalama were sold and transported to Tanzania to provide service between the mainland and Zanzibar.
Sinking
On July 18, 2012, the vessel sank near Chumbe Island while in ferry service in Tanzania. After departing Dar es Salaam bound for Unguja Island with more than 250 people on board, the ship struggled in rough seas and sank approximately from Unguja. At least 146 were rescued while as many as 150 were still missing after a day of rescue operations. Early reports attributed the disaster to high winds and overloading of passengers. The ship was certified for a maximum capacity of 250 yet officials said it had 290aboard at the time.
Outcome
The Zanzibargovernment blamed the disaster on the ship operating over too long of a distance, and the island's transportation ministerresigned. In addition, vessels had been warned not to make the crossing because of the high seas, according to Tanzania's chief meteorologist. After Skagits loss, Zanzibar barred sister ship MV Kalama from operating and later "deleted" her and three other ferries from its list ofsea vessels for safety reasons.