A patrol boat is a relatively small naval vessel generally designed for coastal defence, border security, or law enforcement. There are many designs for patrol boats, and they generally range in size. They may be operated by a nation's navy, coast guard, police, or customs, and may be intended for marine, estuarine, or river environments.
The Fremantle-class patrol boats were coastal patrol vessels operated by the Royal Australian Navy (RAN) from 1979 to 2007. Designed by British shipbuilder Brooke Marine and constructed in Australia by NQEA, the Fremantle class were larger, more powerful, and more capable than the preceding Attack class, and the two primary patrol boat bases required infrastructure upgrades to support them. Although up to 30 vessels were planned, fifteen were ordered and constructed, with an unexercised option for five more.
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.
HMS Severn is a River-class offshore patrol vessel of the Royal Navy. Named after the River Severn, the ship is the first to bear the name in 56 years. She was built by Vosper Thornycroft in Southampton, England, to serve primarily as a fishery protection unit within the United Kingdom's waters along with her two sister ships Mersey and Tyne. All three were commissioned into service in 2003 to replace the five older Island-class patrol vessels. The ship was decommissioned in 2017, but the Government decided to recommission her as part of Brexit preparedness. She returned to service in 2020 and was recommissioned into the Royal Navy on 28 August 2021.
The Lake-class inshore patrol vessel is a ship class of inshore patrol vessels (IPVs) of the Royal New Zealand Navy (RNZN) and planned for 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.
HMAS Wollongong, named for the city of Wollongong, New South Wales, was one of fifteen Fremantle-class patrol boats to operate with the Royal Australian Navy (RAN). Wollongong is the only RAN vessel to have appeared in two television series, portraying a fictional Fremantle-class patrol boat in both.
HMAS Townsville, named for the city of Townsville, Queensland, was a Fremantle-class patrol boat of the Royal Australian Navy (RAN). Built by NQEA, Cairns, the ship was laid down in 1979, and commissioned into the RAN in 1981.
HMAS Bundaberg, named after the city of Bundaberg, was an Armidale class patrol boat of the Royal Australian Navy (RAN). The ship was built in Henderson, Western Australia, and was commissioned into the RAN in March 2007. Based at HMAS Cairns, Bundaberg spent much of her career deployed as part of border protection and fisheries protection patrols as part of Operation Resolute. In addition, the patrol boat was involved in several national and multinational training exercises, visited Vanuatu in 2011, tracked a suspected drug-smuggling vessel that led to a multimillion-dollar seizure, and participated in the International Fleet Review 2013. In August 2014, a large fire broke out on the ship while she was undergoing refit. Extensive damage from the fire led to the ship's decommissioning in December 2014.
HMAS Fremantle, named for the city of Fremantle, Western Australia, was the lead ship of the Fremantle-class patrol boats, entering service in the Royal Australian Navy in 1980 and decommissioning in 2006. Fremantle was the only ship of the class not constructed in Australia, and it is claimed that her delivery voyage from England to Austrlaia was the longest ever made by a patrol boat.
HMNZS Wakakura (P3555) was a Moa-class inshore patrol vessel of the Royal New Zealand Navy. It was commissioned in March 1985 for the Naval Volunteer Reserve.
HMNZS Kiwi (P3554) was a Moa-class inshore patrol vessel of the Royal New Zealand Navy. It was commissioned in 1983 for the Naval Volunteer Reserve. Kiwi had been attached to the Christchurch division of the Naval Volunteer Reserve from her commissioning until relocating to Auckland in 2006.
HMNZS Rotoiti was a Lake-class inshore patrol vessel of the Royal New Zealand Navy. These boats perform border and fishery 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 Tarapunga was a modified Moa class inshore patrol vessel of the Royal New Zealand Navy (RNZN).
HMNZS Takapu was a modified Moa class inshore patrol vessel of the Royal New Zealand Navy (RNZN).
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. Hinau is the second ship with this name to serve in the Royal New Zealand Navy. The name comes from the forest tree Elaeocarpus dentatus which is native to New Zealand.
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 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 Manawanui was a naval tug which was modified for use as a diving tender by the Royal New Zealand Navy (RNZN). Originally intended for service with the United States Navy as a tug, the vessel was built in 1945 and transferred to the New Zealand Marine Department, which employed her in Waitemata Harbour before transferring the ship to the RNZN in 1948. She was converted to a diving tender in 1953 and served out her time in the RNZN in this role, before being decommissioned in 1978 and sold to the Paeroa Historic Maritime Park. The engine is now on display at the Whangarei Stationary Engine Club.
HMAS Gladstone, named for the city of Gladstone, Queensland, is a Fremantle-class patrol boat, formerly of the Royal Australian Navy (RAN). Built by NQEA during the early 1980s, Gladstone was commissioned into RAN service in 1984.
New Zealand 
