The first five “frigates” began life as destroyer leaders (DL).
   One-of-a-kind Norfolk was conceived as an all-weather anti-submarine hunter-killer cruiser (CLK) and authorized in F/Y 1947. Built at New York Shipbuilding on a modified Atlanta-class

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hull and thus named for a city, she was designated DL (destroyer leader) 1 and referred to as a “frigate.” In commission 1953–73, she spent her career evaluating ASROC, sonar and radar installations. A planned sister CLK, New Haven, was canceled in 1951.

Below: the five DLs. Click on any image to view it in more detail.1 Norfolk; 2 Mitscher; 3 John S. McCain; 4 Willis A. Lee; 5 Wilkinson.

NORFOLK SPECIFICATIONS
Length: 540' overall; 520' waterline.
Beam: 53' 6".
Draft: 26'.
Displacement: 5600 long tons standard.
Armament: Guns: 8 x 3"/70 (4x2); 18 x 20mm (8x2); ASW: 4 x Weapon Able (Alfa); 8 x 21" torpedo tubes.
Propulsion: geared turbines, 80,000 shp; 2 shafts.
Speed: 33 Knots.
Range: 6000 nm @ 20 knots.
Crew: 28 officers; 345 enlisted.

   Discussions that led to the Mitscher class originated in 1942, but not until 1949–50 were four keels laid down for DD 927–930, all named for admirals who had served in the Pacific war and died in 1945–47: Mitscher and John S. McCain at Bath and Willis A. Lee and Wilkinson at Bethlehem Quincy. Redesignated DL 2–5 in 1951, they commissioned in 1953 and 1954.
   The four frigates were intended as fast task force escorts. Fifty feet shorter than Norfolk but 100 feet longer than the preceding Gearing class 2250-tonners, they were large enough to maintain formation in a seaway to defend fast carrier task forces from air and submarine attack. Their design incorporated new 950-degree 1200 psi boilers. All four were used for testing sensors and weapons:
 • The two Bethlehem ships were the US Navy’s first ships modified to mount bow-mounted sonar. Their complex engineering plants proved unreliable, however, and they decommisioned in 1969 after only 15 years’ service;
 • The two Bath ships were fitted with missiles launchers and redesignated DDG 35 and 36 in 1968–69. Reboilered, they remained in commission until 1978.

MITSCHER CLASS SPECIFICATIONS
Length: 490' overall; 476' waterline.
Beam: 47' 6".
Draft: 14' 8".
Displacement: 4855 long tons full load.
Initial armament: 2 x 5"/54 RF (2x1); 4 x 3"/50 (2x2); 8 x 20mm (4x2)
ASW: 2 x Weapon Alfa; 4 x 21" torpedo tubes, 1 depth charge track.
Propulsion: geared turbines, 80,000 shp; 2 shafts.
Speed: 36.5 Knots.
Range: 4500 nm @ 20 knots.
Crew: 28 officers; 345 enlisted.