RNZN IPV

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The RNZN IPV is to be an inshore patrol vessel for the Royal New Zealand Navy.

1 Design origin
2 Names
3 General
4 Propulsion
5 Patrol and response
6 Armament
7 See also

[edit] Design origin

Conceived as part of Project Protector, the Ministry of Defence acquisition project to acquire one multi-role vessel, two offshore and four inshore patrol vessels. The Project Protector vessels will be operated by the RNZN to conduct tasks for and with the New Zealand Customs Service, the Department of Conservation, Ministry of Foreign Affairs and Trade, Ministry of Fisheries, Maritime New Zealand, and New Zealand Police.

The IPVs will be used for inshore tasks within 50nm of the coastline.

The shipbuilders (Tenix Defence) claim "the vessel is more than capable of extending the Crown's operational envelope to southern ocean patrol duties".

[edit] Names

On 31 March 2006 the Hon. Phil Goff, Minister of Defence, announced that the IPVs will be named HMNZS Taupo, HMNZS Pukaki, HMNZS Hawea and HMNZS Rotoiti. These are the names of Lake class patrol boats, and frigates, previously operated by the RNZN. These ships' names come from New Zealand lakes, two in the North Island and two in the South Island.

[edit] General

Displacement 340 tonnes
Dimensions 55 x 9 x 2.9 metres (179 x 29 x 9 feet)
Max speed 25 knots
Range 3,000 nm
Complement 20 (+2) Navy 4 Govt agency officers 12 additional personnel
To achieve the required 950 patrol days and allow sufficient crew rest, multi-crewing of the four boats by six crews is required.

[edit] Propulsion

Two MAN B&W 12VP185 engines rated at 2,500 kW and 1,907 RPM
ZF 7640 NR gearboxes
Two controllable pitch propellers
Range 3,000 nautical miles and a maximum speed of 25knots
Economical speed 12 knots
Loiter speed 4-7 knots

[edit] Patrol and response

Sea boat deployment and recovery in sea state 4 (seas moderate, waves 1.25 - 2.5m)
Vertrep in sea state 5 (seas rough, waves 2.5- 4m)
Ability to patrol in sea state 5 and survive in sea state 8 (seas very high, waves 9 - 14m)