History
United States
Name	USS Porpoise
Builder	Portsmouth Navy Yard
Launched	1820
Fate	Sunk, 1833
General characteristics
Type	Schooner
Displacement	177 long tons (180 t)
Length	86 ft (26 m)
Beam	24 ft 7 in (7.49 m)
Depth	10 ft 4 in (3.15 m)
Propulsion	Sail
Armament	12 × 6-pounder guns

The first USS Porpoise was a topsail schooner in the United States Navy.

Porpoise was built in 1820 at the Portsmouth Navy Yard, Kittery, Maine. The schooners Alligator, Dolphin, and Shark were her sister ships.

She first cruised in the West Indies in 1821–1823, Lieutenant James Ramage in command, hunting pirates.

Cruising the West African coast in 1824–25, the schooner engaged in the suppression of the slave trade. Late in 1825, she returned to the United States and, under Commander Foxhall A. Parker, Sr., cruised off the northeast coast of the United States.

Porpoise cruised the Mediterranean from 1826 until 1830 under the command of Lts. Benjamin Cooper, John H. Bell, and Thomas M. Newell successively. Returning to the West Indies in 1830, she sailed under Lts. John Percival, James Armstrong, and James McIntosh.

While cruising in the West Indies in 1833 under the command of Lt. William Taylor, Porpoise was wrecked on a reef off Point Lizardo.

 This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.