1,577 articles
American packet trade
The American packet trade was a system of scheduled sailing lines from New York, begun by the Black Ball Line in 1818, that dominated transatlantic service until steam.
American Queen (steamboat)
The American Queen was an overnight sternwheel steamboat built in 1995, generally described as the largest steamboat ever built, which cruised the Mississippi, Ohio, and Tennessee rivers until 2024.
American submarine NR-1
American submarine NR-1, also known as Deep Submergence Vessel NR-1, was the United States Navy's only nuclear-powered deep-submergence research submarine, serving from 1969 to 2008.
Amoco Cadiz
The Amoco Cadiz was a Liberian-flagged supertanker that ran aground off Brittany, France, in 1978, causing the largest tanker oil spill ever recorded at the time.
Amphibious transport dock
An amphibious transport dock (LPD) is a warship that carries and lands a landing force by landing craft, amphibious vehicles, and helicopters for expeditionary warfare missions.
Anchor
An anchor is a device, typically a heavy object with shaped flukes, lowered to the seabed on a rope or chain to hold a vessel in place by gripping the sea floor.
Anthem of the Seas
Anthem of the Seas is a Quantum-class cruise ship operated by Royal Caribbean International, built by Meyer Werft in Germany and delivered in 2015, known for the North Star observation gondola.
Anti-rolling tank
An anti-rolling tank is a tank built into or onto a ship, partially filled with water whose sloshing generates a moment opposing roll; types include free-surface, U-tube, and flume tanks.
Anzac-class frigate
The Anzac class (ANZAC class) is a class of long-range frigates based on the German MEKO 200 design, built in Australia between 1992 and 2006.
APM Terminals
APM Terminals is an international container terminal operator headquartered in The Hague, Netherlands, and a business unit of the Danish shipping group A.P. Moller–Maersk, established in 2001.
ARA General Belgrano
ARA General Belgrano was an Argentine Navy light cruiser, the former USS Phoenix, sunk by the British submarine HMS Conqueror on 2 May 1982 during the Falklands War.
ARA San Juan (S-42)
ARA San Juan (S-42) was a German-built TR-1700-class submarine of the Argentine Navy, lost with 44 crew on 15 November 2017 during a patrol in the South Atlantic.
Araon
Araon (아라온) is a South Korean icebreaking research vessel operated by the Korea Polar Research Institute, delivered in 2009 as Korea's first icebreaking research ship.
Archibald Gracie IV
Archibald Gracie IV (1859–1912) was an American real estate investor and military historian who survived the Titanic sinking and wrote one of the most detailed firsthand accounts.
Arctic Security Cutter program
The Arctic Security Cutter program is a United States Coast Guard acquisition program for medium polar icebreakers, alongside the larger Polar Security Cutter program for heavy icebreakers.
Arihant-class submarine
The Arihant class is a class of Indian nuclear-powered ballistic missile submarines built at Visakhapatnam under the Advanced Technology Vessel program, completing India's nuclear triad.
Aristotle Onassis (Αριστοτέλης Ωνάσης)
Aristotle Onassis (Αριστοτέλης Ωνάσης), also known as Ari Onassis, was a Greek shipping magnate, 1906–1975, who pioneered offshore companies and flags of convenience while building one of the world's largest tanker fleets.
Arktika (2016 icebreaker)
Arktika (Арктика) is a Russian nuclear-powered icebreaker launched in 2016, entered service in 2020 as the largest and most powerful nuclear icebreaker in the world.
Arrest convention
An arrest convention is a multilateral treaty unifying when a ship may be judicially arrested as security for a maritime claim; the 1952 Brussels and 1999 Geneva conventions govern it.
Articles of Agreement (shipping)
Articles of agreement, also called shipping articles, is the contract signed between a ship's master and each crew member before a voyage, recording the voyage, duties, and wages due.
Articles of War (Royal Navy)
The Articles of War of the Royal Navy were the statutory code of naval discipline aboard His Majesty's ships, first issued in 1652 and reworked by Parliament in 1749.
Assault Amphibious Vehicle
The Assault Amphibious Vehicle (AAV), also known as the LVTP-7, was a tracked amphibious carrier of the US Marine Corps, introduced in 1972 and retired in 2025.
Astute-class submarine
The Astute class, also known as the Astute class submarines, is a class of seven nuclear-powered attack submarines built for the Royal Navy by BAE Systems at Barrow-in-Furness.
Athens Convention relating to the Carriage of Passengers and their Luggage by Sea
The Athens Convention relating to the Carriage of Passengers and their Luggage by Sea is a 1974 IMO treaty on carrier liability for harm to passengers.
Atılay-class submarine (2025)
The Atılay class, also known as MİLDEN, is a planned class of six indigenously designed Turkish submarines of roughly 2,700 tonnes, first welded at Gölcük Naval Shipyard in January 2025.
ATS-class amphibious warfare ship
The ATS class is a planned class of eight amphibious transport ships, four each for the Royal Navy and Royal Netherlands Navy, agreed in 2026.
Attack submarine
An attack submarine, also called a hunter-killer or fast-attack submarine, is a military submarine built to seek out and destroy enemy submarines and surface ships, and to strike land targets with cruise missiles.
Audacia (pipelaying vessel)
Audacia is a dynamically positioned pipelay vessel operated by Allseas, entering service in 2007 and distinguished by a stinger mounted at the bow rather than the stern.
Aurora Botnia
Aurora Botnia is a Finnish-built RoPax ferry operated by Wasaline on the year-round route between Vaasa in Finland and Umeå in Sweden, delivered in 2021 and running on biogas since 2025.
Austal
Austal is an Australian shipbuilding and defense company headquartered at Henderson, Western Australia, founded in 1988, with shipyards in Australia, the United States, the Philippines, and Vietnam.