From the Book Silent Victory by Clay Blair, Jr.
Pages 327/328

In March of 1945, after Jimmy Fife moved operations to Subic Bay, he became ill with a mild case of malaria. Even so, he kept on the job, determined to sink everything Japanese that floted in Southern waters. One target that intrigued him was the light cruiser Isuzu, then engaged in shifting Japanese troops from base to base.

In early April, intelligence reported Isuzu was in Surabaya. A three-boat wolf pack, led by Francis Boyle in Charr, patrolled the Java Sea off Surabaya. The other boats were Besugo, commanded by Herman Edward Miller, and Gabilan, commanded by William Brownlee Parham. They lay in wait along the probable track of the cruiser.

On the morning of April 4, Herman Miller in Besugo made contact with Isuzu and an escort of 4 small vessels. Miller was too far off the tract to shoot, so he surfaced to trail. About that time, William Parham in Gabilan picked up the force through his periscope at 10 miles. Parham saw Besugo trailing. After waiting for Besugo to pass, he surfaced to join the chase. Francis Boyle in Charr saw smoke at 13 miles. He too joined the chase. However, aircraft forced all three boats down and Isuzu got away.

Intelligence reported the next stop for Isuzu was Bima Bay on the north coast of the island of Soembawa. The pack took up station there on April 6, joined by one of Fife's British submarines, Spark.

On the morning of April 6, Isuzu showed up on schedule. All four boats, waiting submerged, saw her. Parham in Gabilan picked her up at 6,500 yards, running close to the beach. He prepared to attack, but Isuzu opened out to 7,500 yards ... beyond reach. Miller in Besugo had a better chanch. The cruiser, "loaded with troops," came close. Miller fired three stern tubes from 500 yards, then six bow tubes. All nine torpedoes missed the cruiser, but one or more hit one of the escorts, Minesweeper No. 12, 632 tons. It sank.

Isuzu went into Bima Bay unharmed, while the pack waited for her to come out again. The following morning at about 3 A.M., Boyle in Charr, made radar contact at 7 miles and alerted Parham in Gabilan. Almost immediately, Parham got contact. He closed and fired six bow tubes. One tube failed to fire, but the other five torpedoes streaked toward Isuzu and at least one torpedo hit. The sonarman reported Isuzu's screws had stopped. Escorts drove Parham under and dropped depth charges.

Boyle in Charr now closed in. At 5:20 - when it was getting light - he submerged and prepared to attack. Parham he saw, had done good work; Isuzu was down by the bow and listing, but she was still making 10 knots. At 1,200 yards, Boyle fired four torpedos. Two hit. Boyle fired two more torpedos. Another hit. Boyle's TDC operator jumped up and down excitedly, exclaiming, "Jeezie Beezie! We hit him. We hit him!" Escorts charged Charr and Boyle went to 400 feet. Boyle heard "load Breaking-up noises"

All this time, the British submarine Spark stood off to one side, watching. The skipper saw the hits on Isuzu, then smoke and flame, than Japanese leaping over the side. That night when Charr and Gabilan surfaced, he reported that the cruiser had sunk. Parham and Boyle shared equal credit for her sinking.
This was USS Charr's Second Patrol.