ORIGINAL DESIGN
Primary: 5 x 5-inch/38 caliber in five single mounts.
Long-range anti-aircraft: none.
Short-range anti-aircraft: 6 x 0.50 cal. machine guns in single mounts.
Torpedo Tubes: 10 x 21-inch in two quintuple mounts.
ASW: 2 tracks for 600-lb. charges.

1941 FOUR-GUN MODIFICATION
Primary: 4 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: none.
Short-range anti-aircraft: 12 x 0.50 cal. machine guns in single mounts.
Torpedo Tubes: 10 x 21-inch in two quintuple mounts.
ASW: 2 tracks for 600-lb. charges; one “Y-gun” projector for 300-lb. charges.

1941 FIVE-TUBE MODIFICATION
Primary: 5 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: none.
Short-range anti-aircraft: 10 x 0.50 cal. machine guns in single mounts.
Torpedo Tubes: 5 x 21-inch in one quintuple mount.
ASW: 2 tracks for 600-lb. charges; one “Y”-gun projector for 300-lb. charges.

TYPICAL EARLY 1942 NEW CONSTRUCTION
Primary: 4 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: 4 x 1.1-inch cannon in one quadruple mount
Short-range anti-aircraft: 5 x 20mm Oerlikon in single mounts
Torpedo Tubes: 5 x 21-inch in one quintuple mount.
ASW: 2 tracks for 600-lb. charges; one “Y”-gun projector or six “K”-guns for 300-lb. charges.

TYPICAL LATE 1942-EARLY 1943 NEW CONSTRUCTION
Primary: 4 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: 4 x 40mm Bofors in two twin mounts.
Short-range anti-aircraft: 4 x 20mm Oerlikon in single mounts.
Torpedo Tubes: 5 x 21-inch in one quintuple mount.
ASW: 2 tracks for 600-lb. charges; six “K”-gun projectors for 300-lb. charges.

TYPICAL LATE 1943–44 ARMAMENT
Primary: 4 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: 4 x 40mm Bofors in two twin mounts.
Short-range anti-aircraft: 7 x 20mm Oerlikon in single mounts.
Torpedo Tubes: 5 x 21-inch in one quintuple mount.
ASW: 2 tracks for 600-lb. charges; 6 “K”-gun projectors for 300-lb. charges.

1944–45 FAST MINESWEEPER (DMS) CONVERSION
Primary: 3 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: 4 x 40mm Bofors in two twin mounts or 8 x 40mm Bofors in two quad mounts.
Short-range anti-aircraft: 7 x 20mm Oerlikon in single mounts.
Torpedo Tubes: none.
ASW: 2 tracks for 600-lb. charges; 6 “K”-gun projectors for 300-lb. charges.

1945 ANTI-AIRCRAFT MODIFICATIONS
Primary: 4 x 5-inch/38 cal. in five single mounts.
Long-range anti-aircraft: 12 x 40mm Bofors in two twin and two quad mounts.
Short-range anti-aircraft: 7 x 20mm Oerlikon in single mounts
Torpedo Tubes: none.
ASW: 2 tracks for 600-lb. charges; 6 “K”-gun projectors for 300-lb. charges.