Gleaves-class destroyer

The Gleaves class were all completed with 600 psi (4,100 kPa) steam (references vary) superheated to 850 °F (454 °C), double-reduction gearing, and cruising turbines.[5] The main steam turbines were designed and built by Westinghouse.[2][8][9]

The class was completed with four or five 5-inch (127 mm) dual purpose guns (anti-surface and anti-aircraft (AA)), controlled by a Mark 37 Gun Fire Control System as in the previous Sims class. The introduction of two centerline quintuple torpedo tube mounts in the Benson-Gleaves class was a significant improvement and was continued in subsequent World War II classes. This allowed a broadside of ten tubes with savings in space and weight compared to previous classes, which had twelve or sixteen tubes and an eight-tube broadside.[2] However, most of the Gleaves class spent most of the war with only five torpedo tubes equipped in favor of greater light anti-aircraft armament. This varied considerably in different ships as the war went on; for example, the specified pair of twin 40 mm (1.6 in) guns were not widely available until mid-1942 and a quadruple 1.1 in (28 mm) gun mount and a 20 mm (0.79 in) gun were temporarily substituted.[8] In 1945 sixteen ships (DD-423, 424, 429–432, 435, 437–440, 443, 497, 623, 624, and 628) were modified for maximum light AA armament as an anti-kamikaze measure, with four 5-inch guns, no torpedo tubes, twelve 40 mm guns in two quad and two twin mounts and four 20 mm guns in two twin mountings.[10][5] Photographs indicate that, as with most pre-1942 destroyers, the initial anti-submarine armament of two depth charge tracks was augmented with four or six K-gun depth charge throwers in 1941–42 on most ships.[11] In 1943 twelve ships (DD-493, 609, 620, 622, 623, 635, 637–639, and 646–648) were temporarily equipped with three Mousetrap ASW rocket launchers, but this was unsuccessful and the only such installation on post-1930 US destroyers. They were removed beginning in March 1944.[8][12]

Chief petty officers had quarters in the forecastle. All other enlisted sailors had a bunk in large open living compartments astern of the engineering spaces. Beneath each tier of bunks were individual lockers with a wooden grate floor. As seawater entered the compartment during rough weather, the wooden grate was intended to lift the locker contents above the deck and allow the seawater to drain out as it sloshed over the deck when the ship rolled. No laundry was included in the original design, but a single washing machine was later installed in a compartment the size of a closet. Clothing could be washed and spun damp to be hung to dry wherever space allowed.[13]

Twenty-four Gleaves-class ships were converted to destroyer minesweepers (DMS-19 through DMS-42) in 1944 and 1945.[8][14] Twelve Atlantic Fleet ships (DD-454–458, 461, 462, 464, 621, 625, 636, and 637) were converted in 1944, with the rest in the Pacific in 1945 (DD-489, 490, 493–496, 618, 627, and 632–635). Magnetic and acoustic minesweeping gear was fitted, with armament reduced to three 5 in guns, no torpedo tubes, two K-guns, four 40 mm guns in two twin mounts, and seven 20 mm guns on the Atlantic ships. The Pacific ships and Hobson had increased light AA armament, with eight 40 mm guns in two quad mounts and six 20 mm guns in two twin and two single mounts. Twelve DMS conversions were the only Benson-Gleaves-class ships retained in service postwar. However, they were judged ineffective in the Korean War due to requiring a large crew compared with purpose-built minesweepers, and were decommissioned in 1954–56.[14]