US FWS Dennis Winn was an American cargo liner in commission in the fleet of the United States Fish and Wildlife Service from 1948 to 1960.

The Seattle, Washington, naval architect Harold Cornelius Hanson[1][2] designed the vessel as a wooden-hulled coastal cargo ship.

[4][5][6][note 1] The Northwestern Shipbuilding Company constructed her at Bellingham, Washington, and delivered her to the United States Army in April 1944 for use during World War II.

[1] Aboard Expansion, a small store sold fresh produce, ice cream, and other perishable goods during her visits to communities along her route.

[1] In November 1965, French interests purchased Expansion in Seattle and thereafter operated her as a transport ship in the South Pacific Ocean under the name MV Temehani.