On 14 August, Tullibee sighted a convoy of three freighters with an escort and began an end-around run to get into good attack position.

On 22 August, Tullibee sighted a convoy of five ships escorted by two destroyers; closed to 2,000 yards (1,800 m); and launched three torpedoes at the nearest freighter.

Postwar examination of Japanese records indicated that Tullibee had damaged one freighter and had sunk the passenger-cargo ship Kaisho Maru.

Another spread of three from the bow tubes produced two hits on a heavily laden cargo ship.

Twelve days later, Tullibee contacted a convoy of seven ships with three escorts that later separated into two groups; one hugging the China coast and the other heading for Pescadores Channel.

On 5 November, the submarine was running submerged near Okinoyerabu Shima when she sighted a large, three-story building on the island.

She began the voyage back to Hawaii the next day and reached Pearl Harbor, via Midway Island, on 16 November.

The trio sortied from Pearl Harbor on 14 December 1943 for the Mariana Islands to intercept enemy shipping plying between Truk and Japan.

On 2 January 1944, Tullibee sighted a Japanese I-class submarine on the surface and launched four torpedoes at a range of 3,000 yards (2,700 m).

On 19 January, Haddock reported that she had damaged the Japanese escort carrier Unyō, which limped to Saipan.

Tullibee sighted the carrier there on 25 January, close ashore and well protected by escorts and aircraft.

The next day, off the Palau Islands she made radar contact on a convoy consisting of a large passenger-cargo ship, two medium-sized freighters, a destroyer, and two other escorts.

Gunner's Mate Second Class Clifford Weldon Kuykendall, on the bridge at the time, was knocked unconscious and thrown into the water.

As with other US submarines lost at sea, Tullibee was not decommissioned by the U.S. Navy and officially remains on "Eternal Patrol".

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