We found information about the following specific ships:

USS Plunger

Description: 1936 Porpoise-class submarine

USS Plunger

Description: 1961 Permit-class submarine

Aliases: SSN-595

USS Plunger

Description: 1902 Plunger-class submarine

Aliases: USS A-1, Submarine Torpedo Boat No. 2, SS-2 Plunger, A-1, and Plunger submarine

Plunger

Description: first submarine torpedo boat built for the United States Navy, cancelled before completion

We also found the following citations which are not yet associated with specific ships: