USS Rivalen (SP-63) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.

Rivalen in private use in 1917, prior to her U.S. Navy service
History
United States
NameUSS Rivalen
NamesakePrevious name retained
BuilderGeorge Lawley & Son, Neponset, Massachusetts
Completed1917
Acquired
  • Leased 17 April 1917
  • Delivered 29 June 1917
Commissioned12 May 1918
Fate
  • Laid up July 1918
  • Returned to owner 5 May 1919
NotesIn use as private motorboat Rivalen 1919-1921 and Tremont 1921-early 1930s
General characteristics
TypePatrol vessel
Length43 ft (13 m)
Beam9 ft (2.7 m)
Draft2 ft 7 in (0.79 m)
Speed19 knots
Complement7
Armament1 × 1-pounder gun

Rivalen was built as a private wooden motorboat of the same name in 1917 by George Lawley & Son at Neponset, Massachusetts. The U.S. Navy acquired her for World War I service as a patrol vessel on a lease from her owner, W. Harry Brown of Pittsburgh, Pennsylvania, on 17 April 1917 and took delivery of her at the Boston Navy Yard at Boston, Massachusetts, on 29 June 1917. The Navy finally commissioned her as USS Rivalen (SP-63) on 12 May 1918.

Rivalen entered service as a patrol boat at Boston Harbor in May 1918, but the Navy soon found her unsuited for naval service and laid her up in July 1918. She then was inactive until returned to her owner on 5 May 1919.

Again in private use from 1919, Rivalen was sold to a new owner and renamed Tremont in 1921. She disappeared from yacht registers in the early 1930s.

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