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For the vessel replacing this one by name, see: HMNZS Canterbury (L-421)

HMNZS Canterbury was one of two broad beam Leander class frigates operated by the Royal New Zealand Navy from 1971 to 2005. HMNZS Canterbury was laid down on 12 June 1969 by Yarrow Shipbuilders and launched 11 months later on 6 May 1970.

Commissioned on the 22 October 1971, Canterbury went on to see operational service in much of Australasia and other regions like the Persian Gulf, undertaking operations like supporting UN sanctions against Iraq and peace-keeping in East Timor. In addition, Canterbury relieved the Royal Navy frigate HMS Amazon in the Indian Ocean during the Falklands War, and later relieved the frigate HMNZS Otago at Moruroa during anti-nuclear protests.

Canterbury was decommissioned in 2005 and after extensive works to remove potentially toxic materials. She was scuttled on 3 November 2007 at Deep Cove in the Bay of Islands to provide a dive wreck. She lies in 35 metres of water.^{[citation needed]}

Contents 1 History 2 Service 2.1 Final fate 2.2 Specifications 2.2.1 Overview 2.2.2 Sensors 2.2.3 Weapons 2.2.4 Aircraft 2.3 References 2.4 External links

The last Leander-class frigate (and the last steam-driven warship) in service in New Zealand, the ship was built in Scotland and launched in 1970. During her time in service, the travelled about 960,000 nautical miles (44 circumnavigations of the Earth), and was temporary home of 559 officers and 3,269 ratings.^[1]

She was sent to Moruroa Atoll in 1973 as a symbolic protest of New Zealand against French nuclear testing. She was also involved in patrolling the Persian Gulf during 1982-1983 and in 1996 was one of the ships tasked with enforcing the embargo against Iraq. She also was the first New Zealand Navy ship to visit China (in 1987), and has participated in a number of humanitarian and peace-keeping missions, for example to Samoa, Fiji or New Guinea.^[1]

In the early 2000s, it was becoming increasingly clear that the ship's technical systems were getting old, and mechanical faults were multiplying. In October 2003, a fire broke out in the auxiliary switchboard while the ship was off the Chatham Islands. The ship was saved through quick action from Dale Bradley and Bjorn MacRae (who received the New Zealand Order of Merit for his actions in the smoke-filled switchboard room), but it was considered that major damage or even ship loss had been only barely avoided. The repairs cost NZ$ 1 million,^[2] and the incident may have added to the decision to eventually decommission and replace her with newer multi-role vessels.^[1].

HMNZS Canterbury (once decommisoned) had leaking problems at Devonport Naval Base in Auckland while awating Government disposal.

After being decommissioned in 2005, there was talk of converting her into a floating hostel. However, during a 2004 inspection, corrosion of the ship's structure had been found to be too serious for her to stay afloat in the long term without very costly maintenance.^[3] Enthusiasts at the Bay of Islands Charitable Trust proposed the idea of scuttling her as a dive wreck at Deep Water Cove in the Bay of Islands. The New Zealand Navy ships Tui and Waikato are already lying on the ground off the Tutukaka Coast, while the Greenpeace ship Rainbow Warrior was scuttled of Matauri Bay. It is hoped that the wreck, in addition to becoming an artificial reef enhancing biodiversity, will also provide additional options for the regions diving tourism.^[4] It is considered that removed scrap metal and equipment (such as ship's lockers or the propellor) will bring up to NZ$ 400,000 to offset the NZ$ 650,000 costs of cleaning up and scuttling her,^[5] while the worth to the local economy could be in the millions.^[1] The ship itself had been sold to the trust for a symbolic NZ$ 1.^[6] The turret of the frigate was removed and is to become part of the exhibits at a planned new navy museum in Auckland.^[3]

It is expected that the ship will be able to be sunk in 2007, after possibly toxic materials have already been stripped out, and the Department of Conservation has withdrawn its objections at the end of 2006.^[4] The intention was originally to sink her on Saturday 20 October 2007 - two days before its 36th commissioning anniversary.^[5] She was sunk by imported plastic explosives placed at 12 locations around the hull (totalling only 14 kg in weight).^[7] The sinking was organised by Norman Greenall, once Chief Petty Officer (shipwright) on the Canterbury. Having also undertaken the scuttling of other New Zealand Navy ships (like the HMNZS Wellington), Greenall has a somewhat colorful reputation in the navy as the person who has "sunk more of our navy ships than the enemy did in the whole of the Second World War".^[2] The HMNZS Canterbury now lies on the seabed in Deep Water Cove.

Displacement: 2945 tonnes (full load)

Dimensions: 113.4 m x 13.1 m x 5.5 m

Endurance: 30 days or 5500 nm @ 15 kt

Max speed 28 kt

Complement: 245 + 15 officers

Machinery: 2 Babcock & Wilcox boilers - 38.7 cm², 850 °F (455 °C), 22.4 MW, 2 diesel generators

The vessel had been extensively modernized from the 1980s. The sensors listed below were those fitted at the time the vessels were withdrawn from service.

Air Search Radar: Signaal LW-08 D Band: Range 265 km for 2 m² target

Air Surface Search Radar: Plessey Type 993 E/F Band

Navigation Radar: Kelvin Hughes Type 1006 I band

Hull Sonar: Graseby Type 750 Medium Frequency Active

Electronic Surveillance: Argo Phoenix intercept and Jammer, Telegon PST 1288 HVU

IFF system: Cossor Mk XII

Data System: Plessey/Marconi Nautis F with Link 11

Weapons Control: RCA TR-76 I Band

Countermeasures: 2 SRBOC Mk 36 Mod 1 launchers

Guns: 2 x Vickers 4.5"(114mm) L45 DP guns in one Mk 6 twin mounting; 1 x Phalanx CIWS, 4 x 12.7 mm.

Missiles: Sea Cat missile system removed early 1990s and replaced by Phalanx.

Anti-submarine: Mk 46 Mod 5 ASW torpedo in Mk 32 Tubes

Originally fitted to operate the Wasp helicopter the vessel later operated the Kaman SH-2G Helicopter.

Helicopter weapons:

• Mk 46 Mod 2 ASW torpedoes
• Maverick AGM-65(NZ) Air-to-surface missile
• Depth charges
• M60 machine gun

• Jane's Fighting Ships (naval reference manual, various editions)

• Canterbury Wreck (from the Bay of Islands Canterbury Charitable Trust website)

v • d • e Leander class frigate
Royal Navy (Leander class)	Achilles · Ajax · Andromeda · Apollo · Arethusa · Ariadne · Argonaut · Aurora · Bacchante · Charybdis · Cleopatra · Danae · Dido · Diomede · Euryalus · Galatea · Hermione · Juno · Jupiter · Leander · Minerva · Naiad · Penelope · Phoebe · Scylla · Sirius
Royal Australian Navy (River class)	Parramatta · Yarra · Stuart · Derwent · Swan · Torrens
Royal New Zealand Navy (Leander class)	Waikato · Canterbury
Indian Navy (Nilgiri class)	Nilgiri · Himgiri · Udaygiri · Dunagiri · Taragiri · Vindhyagiri
Royal Netherlands Navy (Van Speijk class)	Van Speijk · Van Galen · Tjerk Hiddes · Van Nes · Isaac Sweers · Evertsen
South African Navy (President class)	President Kruger · President Steyn · President Pretorius
Preceded by: · Followed by: List of frigates of the Royal Navy List of major warship classes of the Royal Australian Navy