She served on lifeguard duty south of Yap, then scored two torpedo hits on a destroyer before sailing for Midway Island and Pearl Harbor for refit and repairs to a hull badly damaged by depth charges.

Pampanito's third war patrol, from 17 August to 28 September, a wolfpack operation with submarines Growler and Sealion, was conducted in the South China Sea.

A total of 1,159 POWs died, of whom some 350 in lifeboats were bombarded and killed by a Japanese naval vessel the next day when they were rowing towards land.

[9] On 15 September, Pampanito moved back to the area of the original attack and found men clinging to makeshift rafts.

[10] Pampanito's fourth war patrol, from 28 October to 30 December, took place off Formosa and the coast of southeastern China with Sea Cat, Pipefish, and Searaven.

Reclassified AGSS-383, 6 November 1962, she served as a Naval Reserve Training ship at Vallejo, California, until she was stricken from the Navy Register on 20 December 1971.

"[14] The museum runs educational programs including one that allows organized groups of children and adults to sleep overnight in the submarine's 48 bunk beds.

Pampanito and the Liberty ship SS Jeremiah O'Brien were threatened by a four-alarm fire on 23 May 2020, but were saved by local firefighters.

The action scenes use a combination of a special effects shooting miniature for the composited underwater scenes, older Pampanito color stock footage of her under power on the surface, then submerging, and newly shot footage of Pampanito moving under tow in San Francisco Bay while venturing past the Golden Gate Bridge.