USS Permit shows the Porpoise class's demanding wartime tempo

What did the Porpoise-class submarine USS Permit do during the Second World War?

Permit completed fourteen war patrols, returning quickly after her twelfth before finally entering refit after the fourteenth.

Permit survived the Pacific war after an unusually active patrol schedule. She completed a twelfth patrol, returned quickly for a thirteenth, and then went out again for a fourteenth before refit. The explanation contrasts her schedule with the longer refit usually expected after about twelve patrols. Fourteen completed war patrols form the main account of her wartime activity here.