Yard Patrol craft are used by the United States Navy for training and for research purposes. They are designated as YP in the Hull classification symbol system.
Following the attack on Pearl Harbor the United States Navy leased California based tuna boats for the duration of the war or "until victory". On February 16, 1942, San Diego Port Director Commander W.J. Morcott called a meeting of tuna skippers and crews at the Naval Armory Reserve telling the men “The Navy needs men to man the [clippers] — experienced men, like yourselves. Needless to say, duty in the war zones will be hazardous.” Six hundred tuna boat men volunteered to join their boats in the navy. The boats were painted navy grey and had their names replaced with numerical designations. The ships patrolled the coasts of the United States, the Panama Canal and served in several battles of the South Pacific, particularly the Battle of Guadalcanal.
The YPs are used to teach familiarization with water craft, Basic Damage Control and underway instruction of Basic to Advanced Seamanship and Navigation. Yard Patrol craft provide realistic, at-sea training in navigation and seamanship for midshipmen at the U.S. Naval Academy in Annapolis, Maryland, and candidates at Officer Candidate School, Newport, Rhode Island. These craft can cruise for 1,400 nautical miles (2,600 km) at 12 knots (22 km/h) for five days without refueling.
A patrol boat is a relatively small naval vessel generally designed for coastal defense duties. There have been many designs for patrol boats. They may be operated by a nation's navy, coast guard, or police force, and may be intended for marine (blue water) and/or estuarine or river ("brown water") environments. They are commonly found engaged in various border protection roles, including anti-smuggling, anti-piracy, fisheries patrols, and immigration law enforcement. They are also often called upon to participate in rescue operations. Vessels of this type include the original yacht (from Dutch/Low German jacht meaning hunting or hunt), a light, fast-sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into shallow waters.
They may be broadly classified as inshore patrol vessels (IPVs) and offshore patrol vessels (OPVs). They are warships typically smaller in size than a corvette and can include fast attack craft, torpedo boats and missile boats, although some are as large as a frigate. The offshore patrol vessels are usually the smallest ship in a navy's fleet that are large and seaworthy enough to patrol off-shore in the open ocean. In larger militaries, such as in the United States military, offshore patrol vessels usually serve in the coast guard, but many smaller nations navies operate these type of ships.
Patrol Boat is an Australian television drama series that screened on the Australian Broadcasting Corporation. Patrol Boat was created by James Davern and two series were produced, in 1979 and 1983, with a total of 26 episodes.
Patrol Boat was about the activities of the crew of a Royal Australian Navy patrol boat which patrolled Australia's coastline. The series was produced with the co-operation of the Royal Australian Navy.
Two fictional RAN patrol boats were depicted in the series. Attack class patrol boat HMAS Ambush (portrayed by HMA Ships Advance and Bombard) was used in the first season, with filming taking place during 1978 and 1979 around Sydney Harbour, Pittwater, Ku-ring-gai Chase, and the Hawkesbury River. For the second season, the crew transferred to the newer Fremantle class patrol boat HMAS Defiance (portrayed by HMA Ships Launceston, Townsville, Warrnambool, Whyalla, and Wollongong).
The series is similar to the BBC series Warship, screened by the Australian Broadcasting Corporation from 1976, before Patrol Boat. Although the 2007 drama Sea Patrol is based on the same subject, it is not intended to be a follow on to Patrol Boat.