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 River class is a class of offshore patrol vessels built primarily for the Royal Navy of the United Kingdom. A total of nine were built for the Royal Navy (RN), four Batch 1 and five Batch 2. One Batch 1 (HMS Clyde), which was the Falklands guard ship, was decommissioned and transferred at the end of its lease to the Royal Bahrain Naval Force.
Standing Royal Navy deployments is a list of operations and commitments undertaken by the United Kingdom's Royal Navy on a worldwide basis. The following list details these commitments and deployments sorted by region and in alphabetical order. Routine deployments made by the Navy's nuclear-powered submarines and their location of operations is classified.
HMS Mersey is a River-class offshore patrol vessel of the British Royal Navy. Named after the River Mersey, she is the fifth RN vessel to carry the name and the first to be named Mersey in 84 years. Various tenders were renamed Mersey during their service with Mersey Division Royal Naval Reserve between the early 1950s and late 1970s.
HMS Clyde was an offshore patrol vessel and was the tenth Royal Navy vessel to carry the name. She was launched on 14 June 2006 in Portsmouth Naval Base by VT Group shipbuilders in Portsmouth and is the fourth vessel of the River class, with a displacement of 2,000 tonnes and a 30 mm Oerlikon KCB gun in place of the 20 mm gun fitted to Tyne River-class ships. Clyde was decommissioned on the 20 December 2019 at HMNB Portsmouth and was returned to her owners at BAE Systems Maritime - Naval Ships, although the ship remained under lease from BAE Systems to the Royal Navy until the end of March 2020. In August 2020 Clyde was transferred to the Kingdom of Bahrain.
HMS Tyne is a River-class offshore patrol vessel built by Vosper Thornycroft in Southampton for the Royal Navy to serve as a fishery protection unit within the United Kingdom's waters along with her two sister ships Mersey and Severn. All three were commissioned into service in 2003 to replace the five older Island-class patrol vessels.
The Gibraltar Squadron is a unit of the British Royal Navy. It is the only seagoing Royal Naval unit based in Gibraltar, attached to British Forces Gibraltar. It currently includes two Cutlass-class fast patrol boats with a maximum speed of up to 41-knots. The squadron also uses three Pacific 24 rigid-hulled inflatable boats and deploys one diving support boat. The 2021 defence white paper indicated that henceforth, one River-class offshore patrol vessel, HMS Trent, would also be permanently based in Gibraltar for operations in the Mediterranean and in the Gulf of Guinea. As of 2023, 28 personnel were assigned to the squadron, along with additional personnel assigned to HMS Trent.
HMNZS Wellington (P55) is a Protector-class offshore patrol vessel in the Royal New Zealand Navy.
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.
HMS Defender is the fifth of the Type 45 or Daring-class air-defence destroyers built for the Royal Navy. She is the eighth ship to bear the name. Construction of Defender began in 2006, and she was launched in 2009. The ship completed her first sea trials in October and November 2011, and was commissioned during March 2013.
The Amazonas class comprises three offshore patrol vessels (OPVs) built by VT Shipbuilding. The ships entered service with the Brazilian Navy during 2012 and 2013.
HTMS Krabi (OPV-551) is an offshore patrol vessel (OPV) of the Royal Thai Navy. She is a modified River-class patrol vessel, and was built by Mahidol Adulyadej Naval Dockyard, with design and technology transfer support from BAE Systems Surface Ships. Additional construction took place at the Royal Thai Navy Mahidol Dockyard in Sattahip.
British Forces British Indian Ocean Territories (BFBIOT) is the name for the British Armed Forces Permanent Joint Operating Base (PJOB) on Diego Garcia, in the British Indian Ocean Territory. While the naval and airbase facilities on Diego Garcia are leased to the United States as Naval Support Facility Diego Garcia, in practice, the base operates as a joint UK-US base, with the United Kingdom retaining full and continual access.
HMS Forth is a Batch 2 River-class offshore patrol vessel in active service with the Royal Navy. Named after the River Forth, she is the first Batch 2 River-class vessel to be built. She was commissioned into the Royal Navy on 13 April 2018, following a commissioning ceremony at her homeport HMNB Portsmouth. In January 2020 she replaced HMS Clyde as the Falkland Islands patrol ship.
HMS Medway is a Batch 2 River-class offshore patrol vessel for the Royal Navy. Named after the River Medway in Kent, she was the second Batch 2 River-class vessel to be commissioned and is assigned long-term as Royal Navy guardship in the Caribbean.
HMS Trent is a Batch 2 River-class offshore patrol vessel, named after the River Trent. This is the sixth Royal Navy ship named Trent. She is the third Batch 2 River-class vessel to be commissioned and is forward deployed to Gibraltar for operations in the Mediterranean and Gulf of Guinea.
HMS Tamar is a Batch 2 River-class offshore patrol vessel of the Royal Navy. Named after the River Tamar in England, she is the fourth Batch 2 River-class vessel to be built and is forward deployed long-term to the Indo-Pacific region with her sister ship HMS Spey.
HTMS Prachuap Khiri Khan is the second Krabi Class offshore patrol vessel (OPV) of the Royal Thai Navy.
The British Defence Singapore Support Unit (BDSSU) is a British naval facility located in Sembawang, Singapore. A remnant of a larger naval base, known as HMNB Singapore, the facility provides fuel and other supplies to Royal Navy ships in the region, as well as those of other countries. It is the only permanent Royal Navy presence to remain at the former naval base, which is maintained by Naval Party 1022 under the auspices of the Five Power Defence Arrangements (FPDA).
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