| Year | Date | Historical Events |
| 1942 | Mar 6 | Keel laid down by the Portsmouth Naval Shipyard, Kittery, ME. |
| | Jul 20 | Launched. |
| | Sep 18 | Commissioned with CDR. W. G. Ebert in command.
|
| 1943 | Jan 19 | After training out of New London, CT., Scamp set course for Pearl Harbor, HI. via the Panama Canal. |
| | Feb 13 | Scamp arrived in Hawaii and commenced final training in the local operating area. |
| | Mar 1 | Scamp began her 1st war patrol. |
| | Mar 5 | Scamp stopped at Midway Island and debarked her passenger, RADM. Charles A. Lochwood, Jr. Commander, Submarine Force, Pacific Fleet. Fueled and then headed for the coast of Honshu.
|
| | Mar 20 | Scamp damaged an unidentified target. |
| | Mar 21 | Scamp damaged the Manju Maru. |
| | Mar 26 | Scamp stopped at Midway Island again. |
| | Apr 7 | Scamp returned to Pearl Harbor, HI. |
| | Apr 19 | Scamp put to sea again on her 2nd war patreol, bound for the Southwest Pacific. She took on fuel at Johnston Island then slipped between the Marshalls and the Gilberts to reconnoiter Ocean Island and Nauru Island. |
| | Apr 28 | Scamp shaped a course for the Bismarck Archipelago. |
| | May 28 | Scamp succeeded in pumping 3 torpedoes into the converted seaplane tender, Kamikawa Maru. Scamp finished off her stricken adversary with 2 more well aimed torpedoes. |
| | Jun 4 | Scamp ended her 2nd war patrol at Brisbane, Australia, |
| | Jun 22 | Scamp departed from Brisbane, Australia on her 3rd war patrol. She patrolled a scouting line off the Solomons and North to the Bismarck Sea. |
| | Jul 14 | Scamp passed the Shortland Islands. |
| | Jul 27 | Scamp encountered an enemy convoy. Loosed a spread of 6 torpedoes at a Japanese tanker. She scored a hit but had to dive in order to escape the escorts. When she surfaced, a little over an hour later, all enemy shipping was out of sight. |
| | Jul 27 | Scamp sighted the Japanese submarine 1-24 which fired a torpedo. Scamp launched 4 torpedoes and 1-24 erupted in a tremendous explosion. |
| | Aug 8 | Scamp returned to Brisbane, Australia. |
| | Sep 3 | Scamp stood out of Brisbane, Australia on her 4th war patrol. She again patrolled off the Solomons and into the Bismarck Sea. (Exact date unknown) |
| | Sep 18 | Scamp attacked a 3 ship convoy and crippled one of them. Scamp returned to finish off the 8,614-ton passenger ship, Kansai 31 Maru, which she succeeded in doing late that night.
|
| | Sep 21 | Scamp happened upon a heavily guarded convoy and began to stalk it. After dark, she moved in for the kill and, after launching 3 torpedoes, heard 2 double explosions. |
| | Sep 22 | Her second attack was foiled by a severe rain squall. However, Scamp hounded the convoy all through the day. |
| | Sep 23 | Scamp unleashed 4 torpedoes at the convoy. While still maneuvering to attack the convoy, she passed through the wreckage of the Kansai Maru. |
| | Sep 24 | Scamp was ordered to terminate her patrol. |
| | Oct 1 | Scamp returned to Brisbane, Australia. |
| | Oct 22 | Scamp cleared port again on 22 October and began her 5th war patrol with a mission in support of the Treasury Island invasion, 28 to 30 October. From there, she moved to her patrol area, between Kavieng and Truk. |
| | Nov 2 | Scamp sailed back into Brisbane, Australia. |
| | Nov 4 | Scamp launched 3 torpedoes at a passenger ship. One exploded prematurely, but
one reached it's mark. |
| | Nov 10 | Scamp disabled the 6,481-ton Tokyo Maru. Then, after evading the escorts, pumped 3 more torpedoes into the listing target. At about 2100, the cripple was observed being towed away. It was later learned that Tokyo Maru sank before daybreak. |
| | Nov 12 | Scamp damaged light cruiser, Agano, so severely that the enemy warship remained in repair at Truk until the American strike of 16 and 17 February 1944. |
| | Nov 18 | Scamp suffered minor shrapnel damage from two bombs dropped by an enemy float plane. |
| | Nov 26 | Scamp sailed back into Brisbane, Australia. |
| | Dec 16 | Scamp departed Brisbane, Australia and headed back to the Bismarck Archipelago for her 6th war patrol. |
| 1944 | Jan 6 | Scamp missed a small tanker and was boxed in by the sound search of two Japanese destroyers. At 2323, she was able to surface and clear the area while the convoy escorts hunted for her about 8,000 yards astern. |
| | Jan 14 | Scamp slipped by 2 destroyers to launch 6 torpedoes at Nippon Maru. The 9,975 ton tanker sank as Scamp made her escape. Foiled in an attempt to return to the area, she headed South to act as plane guard north of Lyra Reef for B-24 bombers. |
| | Feb 11 | Scamp put into Milne Bay, New Guinea, for refit.
|
| | Mar 3 | Scamp spent her 7th war patrol searching the shipping lanes between New Guinea, Palau, and Mindanao in the Philippines. |
| | Mar 29 | Scamp put in at Langemak Bay, from 29 to 31 March, for repairs to her torpedo data computer. |
| | Apr 4 | Scamp battle-surfaced and set fire to a 200 ton trawler, but broke off the action when her deck gun failed.
|
| | Apr 7 | Scamp encountered 6 cruisers escorted by destroyers and planes. She dived and the destroyers passed overhead. She tried to surface but was attacked by a diving float plane. As she crash dived to escape the enemy plane, an aerial bomb exploded. |
| | Apr 7 | Scamp surfaced and, with a 17 degree list, made for Seeadler Harbor, Manus. |
| | Apr 16 | Scamp arrived at Seeadler Harbor, Manus where she made emergency repairs, then shifted to Milne Bay on 22 April and then moved on to Pearl Harbor for a thorough overhaul at the yard. |
| | Oct 16 | Scamp set out on her 8th war patrol. She fueled at Midway on the 20th, then set course for the Bonin Islands. |
| | Nov 9 | Scamp acknowledged a message changing her patrol area. She reported her position to be about 150 miles North of the Bonin Islands with all 24 torpedoes aboard and 77,000 gallons of fuel remaining. |
| | Nov 11 | From records available after the war, it appears that Scamp was sighted by Japanese planes and reported depth charged by a coast defense vessel to the South of Tokyo Bay. 83 men lost. |
| 1945 | Apr 28 | Struck from the Naval Register. Scamp (SS-277) earned seven battle stars for World War II service. |