Following long-running Navy retention problems in the wake of NZDF "civilianisation", two of the four vessels were tied up, inactive, in a 'Reduced Activity Period' for long periods between 2013 and 2018. In June 2019 the New Zealand Government announced that two of the patrol vessels would be withdrawn from service, and they were decommissioned in October that year.
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 were to 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 future duties will include maritime surveillance and boarding, support to civilian agencies such as the customs service and search and rescue duties.[2]
Engine room of HMNZS Hawea
The ships were built in Whangarei by Tenix Defence, and are based on a modified search and rescue vessel for the Philippine Coast Guard, with a different superstructure design. The cost for the four vessels was planned to be NZ$100 million.[2]Friction stir welding was used in the construction of the superstructure, and Donovan Group being the first New Zealand company to use the technique, which is credited as having won them the contract for this part of the vessel's construction.[2][3]
Capabilities and features
The IPVs will normally be used for inshore tasks within 24 nautical miles (44 km; 28 mi) of the coastline.[2] However, they will have operational ranges of 3,000 nautical miles (5,600 km; 3,500 mi). Together with their improved speed, this will be sufficient to intercept, for example, large off-shore fishing trawlers working illegally in New Zealand waters.[2] Each vessel was intended to achieve 290 available patrol days per year.[4]
The ships were intended to have the ability to patrol (including receiving vertical replenishment) in up to sea state 5 (seas rough, waves 2.5–4 m (8.2–13.1 ft)) and have the ability to survive in conditions of up to sea state 8 (seas very high, waves 9–14 m (30–46 ft)). However, boat deployment and recovery will be limited to sea state 4 (seas moderate, waves 1.25–2.5 m (4.1–8.2 ft)). These parameters are much more capable than the Moa class which they replace.[2] The shipbuilder claims "the vessel is more than capable of extending the Crown's operational envelope to southern ocean patrol duties".[citation needed]
Irish Naval Service
In August 2021, an article in the Irish Examiner reported that the Department of Defence (Ireland) is exploring the possibility of purchasing two of the Lake class inshore patrol vessels for the Irish Naval Service. It is reported that the ships would be used for fisheries protection and patrolling in the Irish Sea following Britain's exit from the European Union. The Lake class vessels are seen as ideal for the calmer conditions of the Irish Sea, which will allow the larger OPVs of the Irish Naval Fleet to focus on Atlantic Ocean operations.[5]
On 13 March 2022 the Irish Department of Defence confirmed the acquisition of the two retired Lake-class IPVs, HMNZS Rotoiti and HMNZS Pukaki for €26 million. The two Lake-class ships will replace the Irish Naval vessels LÉ Orla and LÉ Ciara. Both Lake-class IPVs will undergo restoration work to bring them to Lloyd's Classification in New Zealand before being transported to Ireland in 2023.[6]
These ships are expected to operate primarily in the Irish Sea and off Ireland's South East coast and will most likely be based in the port of Dún Laoghaire in County Dublin. The vessels may also undergo an armament upgrade from the current three 12.7mm HMGs, to a 30mm or 40mm main gun.
lake, class, inshore, patrol, vessel, other, uses, protector, class, lake, class, patrol, vessel, also, known, rotoiti, class, protector, class, ship, class, inshore, patrol, vessels, ipvs, royal, zealand, navy, rnzn, irish, naval, service, which, replaced, rn. For other uses see Protector class and Lake class patrol vessel The Lake class inshore patrol vessel also known as the Rotoiti class and the Protector class is a ship class of inshore patrol vessels IPVs of the Royal New Zealand Navy RNZN and the Irish Naval Service which replaced the RNZN s Moa class patrol boats in 2007 2008 All four vessels are named after New Zealand lakes HMNZS Rotoiti and HMNZS Pukaki in 2010Class overviewNameLake classBuildersTenix Defence WhangareiOperators Royal New Zealand Navy Irish Naval ServicePreceded byMoa class Peacock class corvetteCostNZ 35 8 million 2008 per unitBuilt2005 2008In service2009 presentIn commission2009 presentCompleted4Active2General characteristicsTypeInshore patrol vesselDisplacement340 tonnes loaded Length55 m 180 ft Beam9 m 30 ft Draught2 9 m 9 5 ft PropulsionTwo MAN B amp W 12VP185 engines each rated at 2 500 kW 3 400 hp at 1 907 rpm ZF 7640 NR gearboxes Two controllable pitch propellersSpeedTop speed 25 knots 46 km h 29 mph Patrol speed 16 knots 30 km h 18 mph Range3 000 nautical miles 5 600 km 3 500 mi Boats amp landing craft carried2 RHIB with diesel powered three stage jet unitsComplement36 includes 4 government agency staff and up to 12 others 1 Armament3 12 7 mm machine guns Small armsNotes 2 Following long running Navy retention problems in the wake of NZDF civilianisation two of the four vessels were tied up inactive in a Reduced Activity Period for long periods between 2013 and 2018 In June 2019 the New Zealand Government announced that two of the patrol vessels would be withdrawn from service and they were decommissioned in October that year Contents 1 Design and construction 2 Capabilities and features 3 Irish Naval Service 4 Ships in class 5 See also 6 References 7 External linksDesign and construction EditConceived 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 were to 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 future duties will include maritime surveillance and boarding support to civilian agencies such as the customs service and search and rescue duties 2 Engine room of HMNZS Hawea The ships were built in Whangarei by Tenix Defence and are based on a modified search and rescue vessel for the Philippine Coast Guard with a different superstructure design The cost for the four vessels was planned to be NZ 100 million 2 Friction stir welding was used in the construction of the superstructure and Donovan Group being the first New Zealand company to use the technique which is credited as having won them the contract for this part of the vessel s construction 2 3 Capabilities and features EditThe IPVs will normally be used for inshore tasks within 24 nautical miles 44 km 28 mi of the coastline 2 However they will have operational ranges of 3 000 nautical miles 5 600 km 3 500 mi Together with their improved speed this will be sufficient to intercept for example large off shore fishing trawlers working illegally in New Zealand waters 2 Each vessel was intended to achieve 290 available patrol days per year 4 M2 12 7x99mm 50 cal machine gun on HMNZS Hawea The ships were intended to have the ability to patrol including receiving vertical replenishment in up to sea state 5 seas rough waves 2 5 4 m 8 2 13 1 ft and have the ability to survive in conditions of up to sea state 8 seas very high waves 9 14 m 30 46 ft However boat deployment and recovery will be limited to sea state 4 seas moderate waves 1 25 2 5 m 4 1 8 2 ft These parameters are much more capable than the Moa class which they replace 2 The shipbuilder claims the vessel is more than capable of extending the Crown s operational envelope to southern ocean patrol duties citation needed Irish Naval Service EditIn August 2021 an article in the Irish Examiner reported that the Department of Defence Ireland is exploring the possibility of purchasing two of the Lake class inshore patrol vessels for the Irish Naval Service It is reported that the ships would be used for fisheries protection and patrolling in the Irish Sea following Britain s exit from the European Union The Lake class vessels are seen as ideal for the calmer conditions of the Irish Sea which will allow the larger OPVs of the Irish Naval Fleet to focus on Atlantic Ocean operations 5 On 13 March 2022 the Irish Department of Defence confirmed the acquisition of the two retired Lake class IPVs HMNZS Rotoiti and HMNZS Pukaki for 26 million The two Lake class ships will replace the Irish Naval vessels LE Orla and LE Ciara Both Lake class IPVs will undergo restoration work to bring them to Lloyd s Classification in New Zealand before being transported to Ireland in 2023 6 These ships are expected to operate primarily in the Irish Sea and off Ireland s South East coast and will most likely be based in the port of Dun Laoghaire in County Dublin The vessels may also undergo an armament upgrade from the current three 12 7mm HMGs to a 30mm or 40mm main gun Ships in class Edit Royal New Zealand NavyName Pennant no Commissioned Decommissioned StatusHMNZS Pukaki P3568 14 May 2009 17 October 2019 Sold to Ireland undergoing refitHMNZS Rotoiti P3569 17 April 2009 17 October 2019 Sold to Ireland undergoing refitHMNZS Taupo P3570 29 May 2009 In active serviceHMNZS Hawea P3571 1 May 2009 In active service Irish Naval ServiceTBA TBA Planned for 2023 Undergoing refit former HMNZS PukakiTBA TBA Planned for 2023 Undergoing refit former HMNZS RotoitiSee also EditProtector class offshore patrol vessel HMNZS Canterbury L421 References Edit Rotoiti P3569 from the Royal New Zealand Navy website Accessed 2008 04 21 a b c d e f g Welded Bliss e nz magazine Engineering New Zealand March April 2008 Volume 9 2 Friction stir welding at Auckland University of Technology AUT Royal New Zealand Navy Department of Defence looking to buy New Zealand naval ships 12 August 2021 Announcement of the purchase of two Inshore Patrol Vessels IPVs from the New Zealand Government External links Edit Wikimedia Commons has media related to Protector class inshore patrol vessels Inshore Patrol Vessels HMNZ Ships Rotoiti Taupo Hawea and Pukaki Retrieved from https en wikipedia org w index php title Lake class inshore patrol vessel amp oldid 1088537065, wikipedia, wiki, book, books, library,
