An Cosantóir

IPVs HMNZS Rotoiti and HMNZS Pukaki are two of four Lake Class Inshore Patrol Vessels (IPVs) built by Tenix Defence in Whangarei for the Royal New Zealand Navy (RNZN), and commissioned into service in 2009. At 55 metres in length, the vessels have a displacement of 340 tonnes, and have a top speed of 25 knots (46km/hr). Both vessels were subsequently decommissioned in 2019, following a decision by the RNZN which identified that a better capability outcome would be achieved utilising their current Offshore Patrol Vessels (OPVs). Following the procurement of both vessels by the Irish Government in 2022, HMNZS Rotoiti (now P71) and HMNZS Pukaki (now P72) underwent a regeneration and modification programme of works, primarily taking place at Devonport Naval Base, Auckland. The programme of works included a major overhaul and service of Main Engines and Generators, upgrade of various Control Systems including Steering, Power Management, Propulsion, and Measuring Alarm Systems. The vessels were also dry docked, during which time the propulsion shafts were removed and both hulls surveyed and repainted, including the new Irish Naval Service (INS) pennant numbers. Electrical modifications also took place on-board both vessels, including replacement of sockets, upgrade of lighting and CCTV System, and cable replacement throughout the internal areas. During Q1 of 2023, a multidisciplinary Project Team of INS Personnel oversaw the final Harbour Acceptance Trials (HATs) and Sea Acceptance Trials (SATs) of both vessels in Auckland. The team consisted of Marine and Electrical Engineer Officers, Navigation and Operations Officers, Radio & Radar Technicians, Electricians, Fitters, and Seamanship specialists. On completion of HATs and SATs, the vessels were commercially lifted and transported from Auckland to Cork Harbour, arriving in April of this year. Now in the custody of the INS, the vessels are undergoing the final phase of the overall Regeneration Project, where communications systems are undergoing installation to ensure fleet standardisation and future capabilities can be achieved. Some minor outfitting works will also be carried out during this period, prior to crew familiarisation and training, with an expectation of becoming operational during 2024. 24 | NAVAL SERVICE END NAVAL SERVICE END OF YEAR REVIEW OF YEAR REVIEW BY LT (NS) DUBHEASA NÍ CIONNACH PÍC PHOTOS PROVIDED BY LT (NS) DUBHEASA NÍ CIONNACH PÍC An Cosantóir November / December 2023 November / December 2023 www.military.ie/magazine Operation IRINI Operation IRINI members receiving their mission medals Picture from the recent MV Matthew operation OP IRINI members enjoying a break in the sun

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