Upon TINOSA'S arrival in Guam on May 17, 1945 a five day upkeep was conducted by Subdivision 202 and Proteus. Five men were transferred to the squadron and six new hands reported aboard. Major alterations accomplished during this period included the installation of a new fathometer and mine clearing cables were mounted on the diving planes. Five more days were spent in training exercises and at 1500 on May 29 she took departure Apra Harbor on patrol.

She sailed in company with FLYING FISH and BOWFIN. The three were to be an element of a group of nine submarines commanded by E.C. Hydeman in SEA DOG whose task was to enter the Sea of Japan and conduct coordinated attacks on enemy shipping. The other three boat elements of the group, known as Hydeman's Hellcats were SEADOG, CREVALLE, SPADEFISH and TUNNY, SKATE, BONEFISH. The Sea of Japan was a perilous place to operate. Japanese antisubmarine forces and mines had already destroyed six U.S.submarines in the area. TINOSA headed northwest toward Yaku Shima where she would transit the Ryukyu Islands.

On June 1 at 1230 TINOSA received a report of a downed fighter pilot ninety miles dead ahead and she increased speed. FLYING FISH advised TINOSA that BOWFIN was closer and would investigate. At 1315 there was a report of a B-29 ditching 250 miles to the north. The three submarines headed for that position with the expectation of arriving there at 0200 the next morning. Visibility was poor in a dense fog. TINOSA started a search in the area by 0200 and because the fog was firing Very's flares and sounding her whistle at frequent intervals, then stopping to listen for any noise the survivors could provide.

Comsubpac had ordered aircraft to search for the survivors as they could be seen from the air better than they could be seen on the surface in the low lying fog. A search plane arrived on the scene at 0447.

She searched in vain for four hours when suddenly at 0845 radio picked up an SOS from a life raft transmitter and a few seconds later the search plane reported that they had sighted the survivors in a life raft. Latham searched until noon without finding the raft. At that time he asked the aircraft to circle low over the survivors so that he could get a bearing. They agreed to comply when the next SOS was transmitted. The SOS came at 1230, TINOSA obtained a bearing and at 1244 she came alongside the liferaft. Soon ten of the eleven Army airmen who had parachuted from the stricken plane were safely aboard. The parachute of the other airman had failed to open TINOSA and her consorts resumed their trek for the Ryukyus.

At 2200 TINOSA received information of a downed fighter pilot and altered course to make a search At 0030 on June 4 she reached the bailout position and conducted a three hour search without finding any survivors. She broke off the search and headed for a rendezvous where she had been directed to transfer the rescued airmen to SCABBARDFISH. By 2300 the airmen were gone from TINOSA and on their way home.

(It was rumored that the airmen would have rather by put back into their life raft, than travel with Tinosa through the minefields, into the Sea of Japan)

And from the Anaheim Bulletin, by Chris Richard, interview excerpts are as follows:

Bob Weiler, a former left blister gunner, told how he could use a sophisticated computer and communications network to concentrate firepower from different stations on the plane on one or several targets. "If we got somebody within the little (gunsight) circle, he'd had it, " Weiler said.

"We had to bail out on June 1, 1945," he said. "They dropped us a (rescue boat), and we were on the water, that evening and most of the next day before we got picked up by the Tinosa, an American submarine that was beginning a long patrol. They wanted us back at base, so they transferred us to the SCABBARDFISH."