Tribal-class destroyer (1936)

HMCS Haida, a Canadian Tribal-class destroyer and the only Tribal-class destroyer to be preserved
Class overview
Builders:	Vickers Armstrongs William Denny & Brothers Fairfield Shipbuilding & Engineering Company Scotts Shipbuilding & Engineering Company John I. Thornycroft & Company Alexander Stephen & Sons Swan Hunter & Wigham Richardson Halifax Shipyards Cockatoo Dockyard
Operators:	Royal Navy  Royal Australian Navy  Royal Canadian Navy
Preceded by:	I class
Succeeded by:	J class
In commission:	1938–63
Planned:	31
Completed:	27
Cancelled:	4
Lost:	14
Scrapped:	12
Preserved:	1
General characteristics
Type:	Destroyer
Displacement:	1,854 long tons (1,884 t) (standard) 2,520 long tons (2,560 t) (deep load)
Length:	377 ft (115 m) (o/a)
Beam:	36 ft 6 in (11.13 m)
Draught:	11 ft 3 in (3.43 m)
Installed power:	44,000 shp (33,000 kW) 3 × Admiralty 3-drum boilers
Propulsion:	2 × shafts; 2 × geared steam turbines
Speed:	36 knots (67 km/h; 41 mph)
Range:	5,700 nmi (10,600 km; 6,600 mi) at 15 knots (28 km/h; 17 mph)
Complement:	190 (219 in flotilla leaders)
Sensors and processing systems:	ASDIC
Armament:	4 × twin QF 4.7-inch (120 mm) Mk XII guns 1 × quadruple QF 2-pounder anti-aircraft guns 2 × quadruple QF .5-inch (12.7 mm) Mk III anti-aircraft machineguns 1 × quadruple 21-inch (533 mm) torpedo tubes 20 × depth charges, 1 × rack, 2 × throwers War modifications: 3 × twin QF 4.7-inch Mk. XII 1 × twin QF 4-inch (102 mm) Mk. XVI dual-purpose guns up to 4 × single and twin 20 mm Oerlikon AA guns Cayuga, Athabaskan as built: 4 × twin QF 4-inch Mk. XVI dual-purpose guns 1 × twin, 4 × single QF 40 mm Bofors AA guns 1 × quadruple 21-inch torpedo tubes 1 × rack, 2 x throwers for DCs Canadian DDE modernisation: 2 × 4"/45 Mk XVI twin guns 1 × 3"/50 Mk.33 twin guns 4 × 40mm/56 Bofors guns 1 × quadruple 21-inch torpedo tubes 2 × Squid anti-submarine mortars

The Tribal class, or Afridi class, were a class of destroyers built for the Royal Navy, Royal Canadian Navy and Royal Australian Navy that saw service in World War II. Originally conceived during design studies for a light fleet cruiser, the Tribals evolved into fast, powerful destroyers, with greater emphasis on guns over torpedoes than previous destroyers, in response to new designs by Japan, Italy, and Germany. The Tribals were well admired by their crews and the public when they were in service due to their power, often becoming symbols of prestige while in service.

As some of the Royal Navy's most modern and powerful escort ships, the Tribal class served with distinction in nearly all theatres of World War II. Only a handful of Royal Navy Tribals survived the war, all of which were subsequently scrapped from hard use, while Commonwealth Tribals continued to serve into the Cold War, serving with distinction in the Korean War. Only one Tribal survives to this day: HMCS Haida, which is now a museum ship in Hamilton Harbour, Ontario, Canada.

From 1926, all Royal Navy destroyers had descended from a common lineage based upon the prototypes Amazon and Ambuscade. During the interwar period, advances in armament and machinery meant that by the mid-1930s, these "interwar standard" destroyers were being eclipsed by foreign designs, particularly from Japan, Italy, and Germany. To counteract this trend, the Admiralty decided on a new destroyer type, with an emphasis on gunnery over torpedo warfare. The destroyer was based on 'Design V', a design study for a small fleet cruiser (another variant of this design evolved into the Dido-class cruiser). This design envisioned a 1,850-ton ship with a speed of 36.25 knots (67.14 km/h; 41.72 mph), an endurance of 5,500 nautical miles (10,200 km; 6,300 mi), and five twin 4.7 inch guns as main armament.