The Royal New Zealand Navy is the maritime arm of the New Zealand Defence Force. The fleet currently consists of nine ships.
The Moa-class patrol boat was a class of patrol boats built between 1978 and 1985 for the Royal New Zealand Navy by the Whangarei Engineering and Construction Company. They were based on an Australian boat design.
The Protector-class offshore patrol vessel is a ship class of two offshore patrol vessel (OPVs) operated by the Royal New Zealand Navy (RNZN) since 2010. The ships are named HMNZS Otago and HMNZS Wellington.
The Royal New Zealand Navy has several long-term projects to retain and update its capabilities for the future.
HMNZS Wellington (P55) is a Protector-class offshore patrol vessel in the Royal New Zealand Navy.
The Lake-class inshore patrol vessel 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 Otago (P148) is a Protector-class offshore patrol vessel in service with the Royal New Zealand Navy. The development of the OPV design based on an Irish Naval Service OPV class was very contentious with the RNZN arguing for the need for a limited combat suite for effective training and patrol work with a 57 mm-76 mm light frigate gun and associated fire control and radar and electronic warfare systems at least compatible with current 2nd light RN OPVs while the government and Cabinet preference was to use the space and extra finance available to incorporate ice strengthening and provision of extra coastal patrol vessels. The RNZN view was that adding ice strengthening was unnecessary for Southern Ocean patrol as distinct from operation in the Ross sea and the extra weight and complexity would stress and shorten the life of the hulls from 25 to 15 years She was launched in 2006 but suffered from problems during construction and was not commissioned until 2010, two years later than planned. Soon after commissioning Otago encountered problems with both her engines which delayed her arrival at her home port of Port Chalmers. She has served on several lengthy patrols of the Antarctic, though she lacks the capability to operate in heavier levels of ice-coverage which has led to the cancellation of at least one planned operation.
HMNZS Rotoiti was a Lake-class inshore patrol vessel of the Royal New Zealand Navy. These boats perform border and fishery protection patrols.
HMNZS Hawea is a Lake-class inshore patrol vessel of the Royal New Zealand Navy. Hawea was constructed between 2004 and 2007, and commissioned on 1 May 2009. She performs border and fisheries protection patrols.
HMNZS Pukaki is a Lake-class inshore patrol vessel inshore patrol boat of the Royal New Zealand Navy. Pukaki was launched in Whangarei Harbour on 6 May 2008. Its primary duties included border and fisheries protection patrols, surveillance, boarding operations and search and rescue response.
HMNZS Taupo is a Lake-class inshore patrol vessel of the Royal New Zealand Navy. Taupo was delivered to the Ministry of Defence on the 28 May 2009 and commissioned into the Royal New Zealand Navy on 29 May 2009. Taupo is the third ship of this name to serve in the Royal New Zealand Navy and is named after Lake Taupo.
HMNZS Moa (P3553) was a Moa-class inshore patrol vessel of the Royal New Zealand Navy. It was commissioned in 1983 for the Naval Volunteer Reserve and decommissioned in 2007.
HMNZS Hinau (P3556) was a Moa-class inshore patrol vessel of the Royal New Zealand Navy. It was commissioned in 1985 for the Naval Volunteer Reserve and decommissioned in 2007.
HMNZS Pukaki was a Lake-class inshore patrol vessel of the Royal New Zealand Navy. Pukaki commissioned in 1975, deleted in 1991 and sold as a private launch.
HMNZS Rotoiti was a Lake-class patrol vessel of the Royal New Zealand Navy. It was commissioned in 1975 and deleted in 1991.
HMNZS Taupo was a Lake-class patrol vessel of the Royal New Zealand Navy. Taupo was commissioned in 1975 and decommissioned in 1991, serving for 16 years.
HMNZS Hawea was a Lake-class inshore patrol vessel of the Royal New Zealand Navy. It was commissioned in 1975 and decommissioned in 1991.
HMNZS Kahu (A04) was a Moa-class inshore patrol vessel of the Royal New Zealand Navy. She was launched in 1979 as the lead boat of her class, modified to function as a diving tender. She was initially named HMNZS Manawanui (A09), the second of soon to be four diving tenders with this name to serve in the New Zealand Navy. As a diving tender she participated in the exploration and salvage work of the wreck MS Mikhail Lermontov in March 1986.
HMNZS Rotoiti has been the name of three ships of the Royal New Zealand Navy:
Three ships of the Royal New Zealand Navy have been named HMNZS Taupo:
Royal New Zealand Navy 
