Iroquois-class destroyer

HMCS Algonquin
Class overview
Name	Iroquois class
Builders	Marine Industries Ltd., Sorel Davie Shipbuilding, Lauzon
Operators	Canadian Maritime Forces
Preceded by	Annapolis class
Succeeded by	River class
Built	1969–1973
In commission	1972 – 2017
Planned	4
Completed	4
Lost	1 (as target)
Retired	4
Scrapped	3
General characteristics as built
Type	Destroyer
Displacement	5,100 long tons (5,200 t) deep load
Length	129 m (423 ft 3 in)
Beam	15 m (49 ft 3 in)
Draught	4.42 m (14 ft 6 in)
Propulsion	COGOG, 2 shaft 2 × Pratt & Whitney FT12AH3 cruise gas turbines (5.6 MW; 7,500 hp) 2 × Pratt & Whitney FT4A2 boost gas turbines (37 MW; 50,000 hp)
Speed	29 kn (54 km/h; 33 mph)
Range	4,500 nmi (8,300 km; 5,200 mi)
Complement	280
Sensors and processing systems	RCA & Signaal AN/SPS-501 air & surface search radar SMA AN/SPQ-2D surface search radar General Electric Mk. 60 Gun Fire Control System (GFCS) 2 × Signaal WM-22 STIR (Separate Target Illumination Radar) Sperry Mk. 127E navigation radar SQS-505 hull sonar SQS-505 VDS sonar
Armament	2 × quadruple launchers for 32 Sea Sparrow surface-to-air missiles 1 × 127 mm (5 in)/54 Otobreda gun 2 × Mk. 32 SVTT triple 12.75 in (324 mm) torpedo tubes firing Mark 46 Mod 1 torpedoes
Aircraft carried	2 × CH-124 Sea King helicopters
Aviation facilities	Hangar and landing area with beartrap

Iroquois-class destroyers (also known as the DDG 280 class^[1] or ambiguously as the Tribal class^[2]) were a class of four helicopter-carrying, guided missile destroyers of the Royal Canadian Navy. The ships were named to honour the First Nations of Canada.

The Iroquois class are notable as the first all-gas turbine powered ships of this type. Launched in the 1970s, they were originally fitted out for anti-submarine warfare, using two CH-124 Sea King helicopters and other weapons, while their Mk III RIM-7 Sea Sparrow anti-air missiles were sufficient only for point defense. A major upgrade programme in the 1990s overhauled them for area-wide anti-aircraft warfare with the installation of a vertical launch system for Standard SM-2MR Block IIIA missiles.

Due to their extended service lives, the Iroquois-class destroyers were used in a variety of operational roles. They served as flagships for NATO's maritime force, deployed as part of United Nations and NATO forces in the Adriatic, Arabian and Caribbean seas and Atlantic and Indian oceans. The destroyers also performed coastal security patrols and search and rescue missions nearer to Canada.

One was sunk in a live-fire exercise in 2007, two more were decommissioned in 2015 and the last in 2017.