USS Wachusetts (SP-548) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.

She was powered by a 120 indicated horsepower (89 kW) Neisco diesel engine and carried 1,200 US gallons (4,500 L; 1,000 imp gal) of fuel.

As of 1 February 1918, Wachusetts was operating out of the section base at Boothbay, Maine, probably on local patrol duties, under the aegis of Commandant, 1st Naval District.

[5] During July, September, and October 1921, Phalarope′s crew modified Fulmar at Woods Hole for use as a fisheries science research vessel,[6] including installation of a deckhouse from bow to pilothouse;[7] and supported her transfer to Charlevoix.

[6] Stationed at Charlevoix as the first research vessel at the BOF station there – which eventually became the United States Geological Survey′s Great Lakes Science Center – Fulmar was assigned initially to studying the prevention of the destruction of undersized and immature fish by commercial gillnetting.