The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol to identify their ships by type and by individual ship within a type. The system is analogous to the pennant number system that the Royal Navy and other European and Commonwealth navies use.
USS Doyle (FFG-39) was the 30th ship to be constructed in the Oliver Hazard Perry class of guided missile frigates of the United States Navy. Doyle was named after Vice Admiral James Henry Doyle (1897–1982). Vice Admiral Doyle was most known for his contributions during the Korean War as Commander Amphibious Group One. The ship was in service from 21 May 1983 to 29 July 2011. During her 28 years of service, Doyle went on at least six deployments to the Mediterranean Sea and two deployments to the Persian Gulf, including participation in Operation Earnest Will. The ship also operated in the Black Sea, Baltic Sea, and deployed to operate with the Middle East Force. Doyle took part in UNITAS 39-98. Deployed to the Standing Naval Forces Atlantic, and conducted three Southern Command Deployments.
The Hellenic Navy is the naval force of Greece, part of the Hellenic Armed Forces. The modern Greek navy historically hails from the naval forces of various Aegean Islands, which fought in the Greek War of Independence. During the periods of monarchy it was known as the Royal Hellenic Navy.
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 Island-class patrol boat is a class of cutters of the United States Coast Guard. 49 cutters of the class were built, of which 37 remain in commission. Their hull numbers are WPB-1301 through WPB-1349.
Thetis is a sea nymph in Greek mythology.
Hellenic Shipyards S.A. is a large shipyard in Skaramagas, in West Athens regional unit, Greece founded in 1937 as a warship building company.
The Hellenic Coast Guard is the national coast guard of Greece. Like many other coast guards, it is a paramilitary organization that can support the Hellenic Navy in wartime, but resides under separate civilian control in times of peace. The officers and the enlisted members of Coast Guard are regarded as military personnel under Military's Penal Code. It was founded in 1919 by an Act of Parliament and the legal framework for its function was reformed in 1927. Its primary mission is the enforcement of Greek, European and International law in the maritime areas.
The OTO Melara 76 mm gun is a naval autocannon built and designed by the Italian defence company OTO Melara. It is based on the OTO Melara 76/62C and evolved toward 76/62 SR and 76/62 Strales.
The Asheville-class gunboats were a class of small warships built for the United States Navy in response to the Cuban Missile Crisis. The class is named for a city in western North Carolina and the seat of Buncombe County. All Asheville-class gunboats have since been donated to museums, scheduled for scrapping, or transferred to the Greek, Turkish, Colombian and South Korean Navies. The last two Asheville-class gunboats in US service were USS Chehalis and USS Grand Rapids, which were operated by the Naval Surface Warfare Center until they were stricken in 2016.
The Osprey 55-class gunboat is a Danish-designed class of naval ship currently in service in the Hellenic Navy and Royal Moroccan Navy. Two ships were ordered by Greece in March 1988 and built by Hellenic Shipyards. The first one was laid down on 8 May 1989 and launched on 19 December 1989. The second ship was laid down on 9 November 1989 and launched on 16 May 1990. Armament is of modular design and therefore can be changed. 76-millimetre (3 in) guns replaced the Bofors 40 mm (1.6 in) guns in 1995, after being taken from decommissioned Gearing-class destroyers. Options on more of the class were shelved in favour of the slightly larger HSY-55 class.
The HSY-55-class gunboat is a class of naval vessel designed by the Hellenic Navy and built by Hellenic Shipyards (HSY). This class of ship uses the modular concept so that weapons and sensors can be changed as required. These vessels are similar in appearance to Osprey 55-class gunboat. The first pair was ordered on 20 February 1990, but completion was delayed by the shipyard's financial problems. Pyrpolitis (P57) was launched on 16 September 1992, and Polemistis (P61) on 21 June 1993. Each ship can carry 25 fully equipped troops. Alternative guns and Harpoon SSM can be fitted as required.
P61 or P-61 may refer to:
The Cyprus Naval Command is the armed sea wing of the Cyprus National Guard. The Cypriot Navy has the primary mission of defending the maritime borders of the Republic of Cyprus, but is currently unable to access the waters around Northern Cyprus, which have been controlled by the Turkish Navy since the 1974 Turkish invasion of Cyprus. This force does not possess any capital ships or other major warships, but is equipped with patrol boats, landing craft, surface-to-surface missile systems and integrated radar systems, as well as SEALs-type naval underwater demolitions units.
The Roussen class is a seven-strong class of British-designed fast attack missile boats improved and customized for the Hellenic Navy, also known as Super Vita. The class is named after its lead ship, which in turn is named after Lt Nikolaos Roussen, a World War II submarines officer who was killed in the suppression of the Navy mutiny in April 1944.
Imia is a pair of small uninhabited islets in the Aegean Sea, situated between the Greek island chain of the Dodecanese and the southwestern mainland coast of Turkey. They are known in Turkey as Kardak.
The Seychelles Coast Guard (SCG) is a branch of the Seychelles People's Defence Force created in 1993. It is a maritime, military, multi-mission service. They acquired responsibility for search and rescue for vessel incidents as well as environmental protection from the Seychelles Port Authority, formerly known as the Port and Marine Services Division.
Thetis class may refer to one of the following ship classes:
USCGC Crawford (WSC-134), was a 125 ft (38 m) United States Coast Guard Active-class patrol boat in commission from 1927 to 1947. She was named for William H. Crawford, (1772–1834) who was appointed in 1816 as Secretary of the Treasury by President James Madison and he continued under President James Monroe through 1825. Crawford was the seventh vessel commissioned by the U.S. Revenue Cutter Service and the Coast Guard named after the former secretary. She served during the Rum Patrol and World War II performing defense, law enforcement, ice patrol, and search and rescue missions.
Hellenic Navy 
