paragraph_text: HMAS "Vendetta" was one of three "Daring" class destroyers built for and operated by the Royal Australian Navy (RAN). The destroyer was built by Williamstown Naval Dockyard and entered service in 1958. During her early career, "Vendetta" was deployed to the Far East Strategic Reserve on multiple occasions. In 1965 and 1966, the destroyer undertook deterrence patrols during the Indonesia-Malaysia Confrontation. Along with several runs escorting the troop transport to Vietnam, from late 1969 to early 1970 "Vendetta" was assigned to combat operations, and became the only Australian-built warship to serve in a shore bombardment role during the Vietnam War.

paragraph_text: During his tour on the guided missile frigate USS Gridley, Kerry requested duty in South Vietnam, listing as his first preference a position as the commander of a Fast Patrol Craft (PCF), also known as a "Swift boat." These 50-foot (15 m) boats have aluminum hulls and have little or no armor, but are heavily armed and rely on speed. "I didn't really want to get involved in the war", Kerry said in a book of Vietnam reminiscences published in 1986. "When I signed up for the swift boats, they had very little to do with the war. They were engaged in coastal patrolling and that's what I thought I was going to be doing." However, his second choice of billet was on a river patrol boat, or "PBR", which at the time was serving a more dangerous duty on the rivers of Vietnam.

paragraph_text: Hans Jenisch (19 October 1913 – 29 April 1982) was a "Kapitänleutnant" in Nazi Germany's "Kriegsmarine" during World War II and a "Kapitän zur See" in West Germany's "Bundesmarine". He commanded the Type VIIA U-boat , sinking seventeen ships on seven patrols, for a total of of Allied shipping, to become the 26th highest scoring U-boat ace of World War II.

paragraph_text: German submarine "U-326" was a Type VIIC/41 U-boat of Nazi Germany's "Kriegsmarine" during World War II. While she carried out one patrol U-326 failed to sink or damage any ships. The boat was sunk in May 1945 in the Bay of Biscay by an American aircraft.

paragraph_text: The Battle of the Dalmatian Channels was a three-day confrontation between three tactical groups of Yugoslav Navy ships and coastal artillery, and a detachment of naval commandos of the Croatian Navy fought on 14–16 November 1991 during the Croatian War of Independence. On 14 November, the commandos torpedoed the "Mirna"-class patrol boat PČ-176 "Mukos" close to the island of Brač in the Split Channel of the Adriatic Sea, prompting a Yugoslav naval bombardment of Brač and Šolta Island the same day. The drifting "Mukos" was salvaged by Croatian civilian boats and was beached at Nečujam bay.

paragraph_text: The "Walrus"-class submarine is the only submarine class currently in operation in the Royal Netherlands Navy. The boats have been in service since 1990 and are all named after sea mammals.

paragraph_text: Nigerian Navy Active 1956 -- present Country Nigeria Type Navy Part of Ministry of Defence Nigerian Armed Forces Motto (s) ``Onward Together ''Fleet 2 amphibious tank landing ships 3 frigates 2 offshore patrol vessels 2 minesweepers 9 fast patrol boats 4 patrol cutters 4 corvettes 16 inshore patrol crafts Engagements Nigerian Civil War First Liberian Civil War Sierra Leone Civil War Conflict in the Niger Delta Boko Haram insurgency Northern Mali War Invasion of the Gambia Website http://www.navy.mil.ng/ Commanders Commander - in - Chief President Muhammadu Buhari Chief of Naval Staff Vice Admiral Ibok - Ete Ekwe Ibas Insignia Naval Ensign Naval Ensign (1960 - 1998) Aircraft flown Attack Lynx Reconnaissance Aerostar Trainer AgustaWestland AW109

paragraph_text: When the Winter War broke out the Finnish Navy moved to occupy the de-militarized Åland Islands and to protect merchant shipping. In the first month of the war, battles between Soviet ships and Finnish coastal batteries were fought at Hanko, Finland, Utö and Koivisto. At Koivisto and Hanko, the batteries forced Soviet battleships to retire with damage. Finnish efforts to use submarines ("Vesikko" and "Saukko") to sink Soviet capital ships failed. In December 1939 the ice became so thick that only the ice-breakers could still move. The two coastal defence ships were moved to the harbour in Turku where they were used to strengthen the air-defences of the city. They remained there for the rest of the war.

paragraph_text: The German submarine "U-109" was a Type IXB U-boat of Nazi Germany's "Kriegsmarine" that operated during World War II. She conducted nine war-patrols, sinking 12 ships and damaging one. All but one of these successes were during the six patrols she carried out under the command of the U-boat ace, Heinrich Bleichrodt.

paragraph_text: The R-class patrol boats was a class of Finnish patrol boats, originally constructed as coastal minesweepers. They were modified into patrol boats by the end of the 1960s and transferred to the Patrol Flotilla and later to the 7th Missile Flotilla. They were then used for sea patrol and as anti-submarine warfare vessels. They were stricken from the Finnish Navy list in the 1990s. The three later vessels, "Ruissalo", "Raisio" and "Röyttä", were somewhat larger and the vessels are therefore sometimes referred to as the Rihtniemi and "Ruissalo" classes. However, the Finnish Navy used the designation R class for all five vessels.

paragraph_text: HMS "Laforey" was a L-class destroyer of the Royal Navy. She was commissioned in and served during the Second World War, and was torpedoed and sunk by a U-boat in 1944. She had been adopted by the civil community of Northampton in November 1941.

paragraph_text: The Lake-class patrol vessel was a class of patrol vessels built in 1974 for the Royal New Zealand Navy by the British boat builders Brooke Marine.

paragraph_text: HMS "Leeds Castle" (P258) was a Castle-class patrol ship built by Hall, Russell & Company of Aberdeen, Scotland for the Royal Navy. She was launched in October 1980 and commissioned the following August. She was involved in the 1982 Falklands War, operating between the British territories of Ascension Island, South Georgia, and the Falkland Islands as a dispatch vessel commanded by Lieutenant-Commander Colin Hamilton.

paragraph_text: USS "Reliable" (SP-352) was a boat or ship which the United States Navy at least considered for service during World War I. Although she received the section patrol number 352, no record of her characteristics or service have been found.

paragraph_text: A PT boat (short for Patrol Torpedo boat) was a torpedo - armed fast attack craft used by the United States Navy in World War II. It was small, fast, and inexpensive to build, valued for its maneuverability and speed but hampered at the beginning of the war by ineffective torpedoes, limited armament, and comparatively fragile construction that limited some of the variants to coastal waters.

paragraph_text: The Bird-class patrol vessels were a class of patrol vessels operated by the Royal Canadian Navy (RCN) during the Cold War. The class derives its name from large birds found in Canada and was designed by the RCN as a replacement for the remaining Second World War-era Fairmile motor launches used for coastal patrol.

paragraph_text: The "Bustamante" class was a class of three destroyers of the Spanish Navy. They were built in Spain to a British design completing between 1914 and 1916. They served until 1930–1932. The "Bustamante" class saw little service, spent mostly in a training squadron and patrolling the coasts of Spain. Compared to contemporary foreign designs, the "Bustamante" class was considered outclassed, with poor armament and a lack of speed.

paragraph_text: SM "UB-27" was a German Type UB II submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 30 April 1915 and launched on 10 February 1916. She was commissioned into the German Imperial Navy on 23 February 1916 as SM "UB-27". "UB-27" sank 11 ships in 17 patrols for a total of .

paragraph_text: German submarine "U-751" was a Type VIIC U-boat built for Nazi Germany's "Kriegsmarine" for service during World War II. Built as yard number 134 of the Kriegsmarinewerft shipyard in Wilhelmshaven, she was commissioned on 31 January 1941. She served with 7th U-boat Flotilla until 1 June as a training boat, and as an operational boat until 17 July 1942, under the command of "Korvettenkapitän" Gerhard Bigalk. "U-751" served in seven patrols with the 7th U-boat Flotilla, sinking the escort carrier . The U-boat was attacked with depth charges from aircraft on 17 July 1942 and sank with the loss of all 48 crew members.

paragraph_text: SM "UB-17" was a German Type UB I submarine or U-boat in the German Imperial Navy () during World War I. The submarine disappeared during a patrol in March 1918.

Question: Which war did the operator of the R class patrol boat serve in?
Answer: Winter War