The first (or second?) Scorpion was a block sloop that was part of Joshua Barney's Chesapeake Bay flotilla in the War of 1812.
The second (or first?) Scorpion, a schooner, served on the upper Great Lakes during the War of 1812.
The third Scorpion was a bark-rigged steamer purchased in 1847 and used in the Mexican-American War.
The fourth Scorpion (PY-3) was a patrol yacht in service from 1898 to 1927.
The fifth Scorpion (SS-278), a Gato-class submarine, was lost during World War II.
The sixth Scorpion (SSN-589), a Skipjack-class submarine was lost by accident during the Cold War.