Skagit and Kalama were constructed in 1989 at Halter Marine in New Orleans, Louisiana.

[4] Along with Skagit, she operated the Seattle-Vashon Island passenger-only service.

In 2006 WSF was directed to end its passenger-only service, and in 2011 Kalama and Skagit were sold.

The vessels were transported to Tanzania to provide service between the mainland and Zanzibar.

[5] Kalama was ordered taken out of service by the Zanzibar government after the loss of Skagit in 2012.