U-boat is an anglicised version of the German word U-Boot[ˈuːboːt](listen), a shortening of Unterseeboot. While the German term refers to any submarine, the English one refers specifically to military submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role and enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from Canada and other parts of the British Empire, and from the United States to the United Kingdom and to the Soviet Union and the Allied territories in the Mediterranean. German submarines also destroyed Brazilian merchant ships during World War II, causing Brazil to declare war on both Germany and Italy on 22 August 1942.
Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open fire and sink them. The use of Q-ships contributed to the abandonment of cruiser rules restricting attacks on unarmed merchant ships and to the shift to unrestricted submarine warfare in the 20th century.
An armed merchantman is a merchant ship equipped with guns, usually for defensive purposes, either by design or after the fact. In the days of sail, piracy and privateers, many merchantmen would be routinely armed, especially those engaging in long distance and high value trade.
In the 18th century and most of the 19th, a sloop-of-war in the Royal Navy was a warship with a single gun deck that carried up to eighteen guns. The rating system covered all vessels with 20 guns and above; thus, the term sloop-of-war encompassed all the unrated combat vessels, including the very small gun-brigs and cutters. In technical terms, even the more specialised bomb vessels and fireships were classed as sloops-of-war, and in practice these were employed in the sloop role when not carrying out their specialised functions.
USS Wake (PR-3) was a United States Navy river gunboat operating on the Yangtze River, that was captured by Japan on 8 December 1941.
USS The Sullivans (DDG-68), is an Arleigh Burke-class Aegis guided missile destroyer. It is the second ship of the United States Navy to be named for the five Sullivan brothers – George, Francis, Joseph, Madison, and Albert Sullivan, aged 20 to 27 – who lost their lives when their ship, USS Juneau, was sunk by a Japanese submarine in November 1942 in the Naval Battle of Guadalcanal. This was the greatest military loss by any one American family during World War II.
Commerce raiding is a form of naval warfare used to destroy or disrupt logistics of the enemy on the open sea by attacking its merchant shipping, rather than engaging its combatants or enforcing a blockade against them.
The names of commissioned ships of the United States Navy all start with USS, for United States Ship. Non-commissioned, primarily civilian-manned vessels of the U.S. Navy under the Military Sealift Command have names that begin with USNS, standing for United States Naval Ship. A letter-based hull classification symbol is used to designate a vessel's type. The names of ships are selected by the Secretary of the Navy. The names are those of states, cities, towns, important persons, important locations, famous battles, fish, and ideals. Usually, different types of ships have names originated from different types of sources.
Altmark was a German oil tanker and supply vessel, one of five of a class built between 1937 and 1939. She is best known for her support of the German commerce raider, the "pocket battleship" Admiral Graf Spee and her subsequent involvement in the "Altmark Incident". In 1940 she was renamed the Uckermark and used as supply tanker for the battleships Scharnhorst and Gneisenau during Operation Berlin before sailing to Japan on September 1942 as a blockade breaker.
Scuttling is the deliberate sinking of a ship by allowing water to flow into the hull. This can be achieved in several ways—seacocks or hatches can be opened to the sea, or holes may be ripped into the hull with brute force or with explosives. Scuttling may be performed to dispose of an abandoned, old, or captured vessel; to prevent the vessel from becoming a navigation hazard; as an act of self-destruction to prevent the ship from being captured by an enemy force ; as a blockship to restrict navigation through a channel or within a harbor; to provide an artificial reef for divers and marine life; or to alter the flow of rivers.
A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales.
Operation Sail refers to a series of sailing events held to celebrate special occasions and features sailing vessels from around the world. Each event is coordinated by Operation Sail, Inc., a non-profit organization established in 1961 by U.S. President John F. Kennedy and must be approved by the United States Congress. Often referred to as OpSail or Op Sail, the event has the goals of promoting good will and cooperation between countries while providing sail training and celebrating maritime history. It is also sometimes erroneously referred to as "Tall Ships". While the tall ships form the centerpiece of the event, smaller sailing vessels also participate.
SMS Seeadler was a three-master steel-hulled sailing ship. She was one of the last fighting sailing ships to be used in war when she served as a merchant raider with Imperial Germany in World War I. Built as the British-flagged Pass of Balmaha, she was captured by the German submarine SM U-36, and in 1916 converted to a commerce raider. As Seeadler she had a successful raiding career, capturing and sinking 15 ships in 225 days until she was wrecked, in 2 August 1917, in French Polynesia.
Prize is a term used in admiralty law to refer to equipment, vehicles, vessels, and cargo captured during armed conflict. The most common use of prize in this sense is the capture of an enemy ship and her cargo as a prize of war. In the past, the capturing force would commonly be allotted a share of the worth of the captured prize. Nations often granted letters of marque that would entitle private parties to capture enemy property, usually ships. Once the ship was secured on friendly territory, she would be made the subject of a prize case, an in rem proceeding in which the court determined the status of the condemned property and the manner in which the property was to be disposed of.
SMS Cormoran or SMS Cormoran II was a German armed merchant raider that was originally a Russian merchant vessel named Ryazan. The ship was active in the Pacific Ocean during World War I. Built in 1909, she was captured by the German light cruiser SMS Emden on 4 August 1914 and converted into a raider at the German colony Kiautschou. She was forced to seek port at Apra Harbor on the U.S. territory of Guam on 10 August 1914. The United States, then declared neutral in the war, refused to sufficient provisions to allow Cormoran to make a German port. After the U.S. declaration of war on April 6, 1917, the Naval Governor of Guam informed Cormoran that she would be seized as a hostile combatant, prompting her crew to scuttle her.
Naval boarding action is an offensive tactic used in naval warfare to come up against an enemy marine vessel and attack by inserting combatants aboard that vessel. The goal of boarding is to invade and overrun the enemy personnel on board in order to capture, sabotage or destroy the enemy vessel. While boarding attacks were originally carried out by ordinary sailors who are proficient in hand-to-hand combat, larger warships often deploy specially trained and equipped regular troops such as marines and special forces as boarders. Boarding and close quarters combat had been a primary mean to conclude a naval battle since antiquity, until the early modern period when heavy naval guns gained tactical primacy at sea.
The Gruppe Monsun or Monsoon Group was a force of German U-boats (submarines) that operated in the Pacific and Indian Oceans during World War II. Although similar naming conventions were used for temporary groupings of submarines in the Atlantic, the longer duration of Indian Ocean patrols caused the name to be permanently associated with the relatively small number of U-boats operating out of Penang. After 1944, the U-boats of the Monsun Gruppe were operationally placed under the authority of the Southeast Asia U-boat Region.
USS Viper – commissioned as USS Ferret – was a brig serving the United States Navy during the early days of the republic. Viper was assigned to enforce the Embargo Act of 1807 along the U.S. East Coast. During the War of 1812, while cruising in the Caribbean, she was captured by the more heavily armed British warships. She then served the Royal Navy as HMS Mohawk until the Navy sold her in 1814. While in British service she served in several actions that earned her crew the Naval General Service Medal,
The Confederate privateers were privately owned ships that were authorized by the government of the Confederate States of America to attack the shipping of the United States. Although the appeal was to profit by capturing merchant vessels and seizing their cargoes, the government was most interested in diverting the efforts of the Union Navy away from the blockade of Southern ports, and perhaps to encourage European intervention in the conflict.
The West Indies Anti-Piracy Operations refer to the United States Navy presence in the Antilles, and surrounding waters, which fought against pirates. Between 1817 and 1825, the American West Indies Squadron constantly pursued pirates on sea and land, primarily around Cuba and Puerto Rico. After the capture of Roberto Cofresi in 1825, acts of piracy became rare and the operation was considered a success although limited occurrences went on until slightly after the start of the 20th-century.
