When acquired by the Navy 15 May 1917, steel yacht Machigonne was renamed SP‑507 (q.v.)
(SP‑1043: t. 425; l. 136'6"; b. 29'; dr. 8'; s. 12 k.; a. 2 1‑pdrs.)
The second Machigonne (SP‑1043), formerly passenger steamer Dida, was built by Neafie, Levy & Co., Phlladelphia, in 1907; operated by the Casco Bay and Harpswell Line until chartered by the Navy 2 October 1917; and commissioned 15 May 1918.
Machigonne transported men and supplies between Boston and Bumpkin Island Training Station, during World War I. She was sold to Boston, Nahant & Pines Steamboat Co. 29 May 1919. Renamed Hook Mountain in 1930, she continued in merchant service until 1941.