DDH 280

280badge.gifBy the mid 1980s, IROQUOIS was beginning to become obsolete. The once state-of-the-art warship was rapidly being eclipsed by the advances in naval weapons technology that had taken place since commissioning a decade-and-a-half previous. The Tribal Class Update and Modernization Project, commonly known by its acronym TRUMP, was initiated to rectify these deficiencies. She is the lead ship of the class and the second one to complete the TRUMP program. 

In October 1988, IROQUOIS sailed to Lauzon, Quebec to commence what would be a three-and-a-half year refit. Under this program, the ship's role was transformed from an general purpose destroyer whose primary focus was ASW (anti-submarine warfare) into a Command and Control flagship that was capable of providing area air defence for a Canadian task group at sea. To fulfil this role, IROQUOIS was fitted with an entirely new above-water weapons, sensor and command and control suite including the U.S. Navy's Mark 41 Vertical Launch System armed with Standard SM-2 anti-air missiles - the same weapon used aboard U.S. Navy "AEGIS" class cruisers and destroyers. The SM-2 is a highly effective missile that can easily engage hostile missiles and aircraft out to ranges in excess of 55 miles. The 5 inch gun was replaced by an Oto Melara 76mm Super Rapid Gun Mount, or SRGM, which has a variable rate of fire of up to 120 rounds per minute. 

Both the gun and the missile system are controlled by two Separate Tracking and Illuminating Radars, called STIRS, manufactured by Signaal Apparaten of the Netherlands. The gun can also be controlled by a separate director called LIROD - the Lightweight Radar and Optronic Director. Close in air-defence is provided by a 20mm Vulcan Phalanx gattling gun mounted on top of the hangar. The air and surface search radars have been upgraded to the LW-08 and DA-08 respectively, also manufactured by Signaal. The entire system is controlled by a Canadian designed computer system, utilizing the same display consoles as the new HALIFAX class frigates. The ASW suite has also been enhanced with the recent installation of the Canadian AN/SQS-510 sonar suite to replace both hull- mounted and variable-depth sonars, greatly enhancing their range and display capabilities. The existing mark 32 ASW torpedo tubes remained, as well as the Mark 46 air and surface launched torpedoes. The obsolete mortar was removed. Marine engineering improvements included installation of an Integrated Machinery Control System, or IMCS, to manage the propulsion plant comprising the original Pratt and Whitney FT-4 main engines and the new Allison cruise engines. 

To reduce IROQUOIS' heat signature, an entirely new funnel system replaced the distinctive "bunny ear" funnels. A water compensated fuel system was installed, as well as an automatic fire detection and suppression system. The old evaporators for producing fresh water at sea were replaced with modern reverse osmosis desalinators. With the refit completed in May 1992, IROQUOIS entered a year long trials program to test the new systems before working-up for duty as the flagship for the Standing Naval Force Atlantic, or STANAVFORLANT, in September 1993. IROQUOIS remained with the NATO fleet until the following April. During that period STANAVFORLANT was under the command of a Canadian, Commodore G.R. Maddison, and was involved in enforcing UN sanctions off the coast of the former Yugoslavia. 

Since then IROQUOIS has enjoyed a busy and challenging schedule of TRUMP test and trials, a major work-up and participation in numerous national, international and NATO exercises. The ship has also conducted a number of extremely successful live SM-2 missile firings. In May 1995 IROQUOIS assumed the duty of flagship for the Commander Maritime Operations Group One - Canada's Atlantic combat fleet - remaining in that role until July 1996. By the late 1990's,  IROQUOIS had sailed almost 400,000 miles, visiting over 100 different ports. These numbers will undoubtedly greatly increase as IROQUOIS serves Canada well into the twenty-first century, assuredly living up to the motto  "Relentless in Chase".

The ship's crew have developed a Home Page for IROQUOIS. Please refer to the Related Sites section.

Early in her service career. (DND Photo)

HMCS Iroquois DDH 280 after the TRUMP conversion. The two outward-raked funnels have now been integrated as one, the most visible feature of the modernization. (DND Photo)

Iroquois 280 Photo Album


Laid down: 15th January 1969
Launched: 28th November 1970
Commissioned: 29th July 1972. The sponsor of IROQUOIS was Nora Michner, wife of the late Governor General, Roland Michner. Mrs. Michner took a very active interest in the ship.
Modernized: 25th October 1988 to 4th July 1992 (TRUMP)
Builder: Marine Industries, Sorel Quebec; Canada
Radio call sign: CZGD 
Type: AAW/ASW destroyer
Length (ft): 426 overall; 398 between perpendiculars
Beam: 50 feet
Draught: 15.5 feet
Masthead height: 153 feet
Cruising range: 4,500 miles (7250 kilometers) at 20 knots
Displacement: 5100 tons fully loaded (except HURON)
Crew: 14 officers; 230 enlisted (pre-TRUMP); 290 total (post-TRUMP)
Speed: 30 knotsPropulsion: Propellers - two 5 blade variable pitch.

Two shafts are powered by four gas turbine engines; two Pratt & Whitney FT4-A2 gas turbines producing 25,000 shaft horsepower each are used for main propulsion. For more economical cruising (at speeds below 17 knots), two Allison 570-KF cruise engines can each supply 6,440 shaft horsepower. A feature unique to the Iroquois class ships is the ability to run a cruise engine in conjunction with a main engine on different shafts.

In order to increase stability, these ships are fitted with a water- displaced fuel system. As fuel is consumed by the engines, water is pumped in to fill the void thus maintaining relatively constant displacement.

Electrical:The ship's main electrical power is provided by three 750 KW Solar Saturn gas turbine driven generators and one 1000 KW GM 149 Diesel generator.

MISSILES: One Martin Marietta Mk 41 Vertical Launch System containing 29 General Dynamics surface to air Standard SM-2MR missiles; command/intertial guidance.GUN: One OTO Melara 76mm 3in/Super Rapid dual purpose gun; 85 degree elevation; 120 rounds/minute.

CLOSE IN WEAPON: One, six-barrelled Phalanx MK15 Gatling gun firing 3,000 rounds/minute.

TORPEDOES: Six 324mm MK 32 on two triple tubes launching Honeywell MK 46 MOD5 anti submarine active/passive homing torpedoes. Torpedoes can alternately be launched by helicopter.

ESM: MEL SLQ-501 CANEWS radar warning.

ELECTRONIC COUNTER MEASURES (ECM): Four Plessey Shield 6 tube trainable chaff/infra red launchers; ULQ-6 deceptive repeater; Nixie towed acoustic decoy.

COMMAND AND CONTROL: SHINPADS automated data handling with UYQ-505 and UYK-507 processors. Link 11 and 14; WSC-IV and SSR-I SATCOM.FIRE CONTROL: Signal WM 25 STIR fire control radars with LIROD gun director.

SONARS: SQS-510; VDS and hull mounted active search and attack.

HELICOPTERS: Two CH-124 Sea King ASW. The four destoyers of the Iroquois Class were originally commissioned in the early 1970s. At that time they were primarily designed for anti-submarine warfare. The current complement of each ship is 255, including 23 officers, plus 30 aircrew. Each ship in this class is capable of embarking two maritime helicopters. Ships' Boats: One Rigid Hull inflatable, speed 30 knots; One Zodiac inflatable.

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Sept 20/07