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Nathaniel B. Palmer
The RVIB Nathaniel B. Palmer was an American icebreaking research vessel that served the U.S. Antarctic Program from 1992, the nation's first commercial icebreaking research ship, until its lease was terminated in October 2025.
National Defense Reserve Fleet
The National Defense Reserve Fleet (NDRF) is a U.S. Maritime Administration fleet of about 100 inactive government-owned merchant ships kept as a reserve, established in 1946.
National Maritime Day
National Maritime Day is a United States observance held each May 22 to honor the merchant marine and maritime industry, commemorating the steamship Savannah's 1819 transatlantic voyage.
National Maritime Historical Society
The National Maritime Historical Society is an American nonprofit founded in 1963 to preserve US maritime heritage, headquartered in Peekskill, New York, and publishing Sea History magazine.
National Maritime Research Institute
The National Maritime Research Institute, also known as Kaijō Gijutsu Anzen Kenkyūjo, is Japan's national maritime research institute in Mitaka, Tokyo, with about 150 researchers and one of the world's largest towing tanks.
National Research Council Institute for Ocean Technology
The National Research Council Institute for Ocean Technology (IOT) was an ocean engineering research institute of Canada's National Research Council in St. John's, Newfoundland, opened in 1985.
Nautor's Swan
Nautor's Swan is a Finnish sailing yacht builder founded in 1966 by Pekka Koskenkylä in Pietarsaari, Finland, producing Swan yachts from one-design racers to maxis over 30 meters.
Naval architecture
Naval architecture, also called ship design or marine architecture, is the engineering discipline covering the design, construction, and operation of ships, submarines, and other floating structures.
Naval ship
A naval ship, also called a military ship, is a vessel belonging to a state's armed forces, built or armed for military service at sea.
Navantia
Navantia is a Spanish state-owned military shipbuilding group under the holding company SEPI, created in 2005 from IZAR, building F-110 frigates and S-80 submarines for the Spanish Navy.
Navigation
Navigation is the practice of determining a vessel's position and guiding it safely from one place to another, developed from coastal piloting and celestial navigation to satellite positioning.
Navigation channel
Navigation channel: a natural or dredged, buoyed lane of water with sufficient depth for vessels, also called a fairway or ship channel; maintained by dredging against shoaling and governed by COLREGs Rule 9 in narrow channels.
Navigation light
A navigation light, also called a position light, is a lamp aboard a vessel showing its presence, size, and direction of travel to other vessels, required by the COLREGs.
Navy List
The Navy List is the official register of the British Royal Navy, listing naval officers with their ranks, seniority, and commands, first published in 1814.
Navy Records Society
The Navy Records Society is a British society, founded in 1893, that publishes edited original documents on the history of the Royal Navy in annual volumes.
Nelson-class battleship
The Nelson class was a pair of British battleships, HMS Nelson and HMS Rodney, built in the 1920s under the Washington Naval Treaty, with all nine 16-inch guns mounted forward.
Nemi ships
The Nemi ships, or Lake Nemi ships, were two first-century pleasure barges attributed to Emperor Caligula, recovered from Lake Nemi near Rome in 1929–1932 and burned in 1944.
Nenana (steamboat)
The Nenana, a wooden-hulled sternwheel steamboat, was built in 1933 for the Alaska Railroad's Yukon and Tanana river service and is preserved as a National Historic Landmark in Fairbanks, Alaska.
Neoliner Origin
Neoliner Origin is a 136-meter French wind-powered roll-on/roll-off cargo ship built in Turkey and launched in 2025, described as the largest sailing cargo ship in the world.
Neopanamax
Neopanamax is the size class of ships that fit through the Panama Canal's third set of locks, opened in June 2016, far larger than the older Panamax limit.
Net tonnage
Net tonnage (NT) is a dimensionless measure of a ship's useful, revenue-earning capacity, defined by the 1969 Tonnage Convention and widely used as the basis for canal dues.
Nevada-class battleship
The Nevada class was a pair of US Navy battleships, USS Nevada and USS Oklahoma, completed in 1916 and pioneers of the all-or-nothing armor scheme.
New FFM
The New FFM, also called the 06FFM or Upgraded Mogami, is an enhanced Mogami-class frigate built by Mitsubishi Heavy Industries for Japan, selected by Australia in 2025.
New Mangalore Port
New Mangalore Port is an all-weather deep-water major port at Panambur in Mangaluru, Karnataka, the only major port in Karnataka, handling about 46 million tonnes of cargo a year.
New Mexico-class battleship
The New Mexico class was a class of three United States Navy battleships, New Mexico, Mississippi, and Idaho, completed from 1917 to 1919 with twelve 14-inch guns.
New York-class battleship
The New York class was a pair of United States Navy dreadnought battleships, USS New York and USS Texas, completed in 1914 as the first American battleships with 14-inch guns.
Newfoundland cod fishery trade
The Newfoundland cod fishery trade was the commercial system, begun in the early 1500s, by which European fishers caught and salted cod off Newfoundland and Labrador.
Nieuwe Waterweg
The Nieuwe Waterweg is the artificial mouth of the Rhine and Meuse rivers in South Holland, connecting the Port of Rotterdam to the North Sea since 1872.
Niña
The Niña, originally the Santa Clara, was the smallest of the three Spanish caravels Christopher Columbus sailed to the Americas in 1492, and carried him home in 1493.
Ningbo–Zhoushan Port
Ningbo–Zhoushan Port (宁波舟山港) is a seaport on the coast of Zhejiang province, China, formed in 2006 by merging the ports of Ningbo and Zhoushan, and one of the world's largest by cargo throughput.