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MSC Meraviglia
MSC Meraviglia is a cruise ship operated by MSC Cruises and the lead ship of the Meraviglia class, delivered in May 2017 by STX France at Saint-Nazaire.
MSC Seaside
MSC Seaside is a cruise ship operated by MSC Cruises, built by Fincantieri and delivered in 2017 as the first of two Seaside-class ships, the largest built in Italy at the time.
MTS Oceanos
The MTS Oceanos was a Greek-owned cruise ship that sank off Coffee Bay, South Africa, on 4 August 1991, with all 571 passengers and crew rescued in a major airlift.
MUGEM-class aircraft carrier
The MUGEM-class aircraft carrier (Milli Uçak Gemisi, "National Aircraft Carrier") is a 60,000-tonne STOBAR carrier under construction for the Turkish Navy at Istanbul Naval Shipyard, with delivery targeted for 2032.
Multi-role strike ship
The multi-role strike ship (MRSS), originally the Multi-Role Support Ship, was a planned Royal Navy amphibious warship class announced in 2024 and canceled in 2026 before construction.
Multihull
A multihull is a boat with more than one hull, most commonly a catamaran with two hulls or a trimaran with three, gaining stability from beam rather than ballast.
Multnomah (steamboat)
Multnomah was a side-wheel steamboat on Oregon's Willamette and Columbia rivers, launched at Canemah in 1851 and the first steamer to ascend the Willamette to Corvallis.
Mundra Port
Mundra Port is a deep-water, all-weather commercial port at Mundra in Kutch district, Gujarat, India, opened in 1998 and operated by Adani Ports and SEZ Ltd.
Museum ship
A museum ship, also called a floating museum, is a historic vessel preserved permanently as a museum exhibit or memorial, kept afloat, in dry dock, or indoors.
Muster roll (maritime)
A muster roll is an official record of a ship's crew kept by the master or owner, required in Britain from 1747 to administer a fund for disabled seamen.
Mutiny on the Bounty
The 1789 mutiny aboard HMS Bounty in the South Pacific, when Fletcher Christian seized the ship and set Lieutenant William Bligh and 18 men adrift.
MV Asterix
MV Asterix, also known as MS Asterix, is a Canadian naval supply ship, a converted container ship chartered to replenish Royal Canadian Navy vessels at sea.
MV Astoria
MV Astoria, also known as MS Völkerfreundschaft, was a Swedish passenger ship launched in 1946 as MS Stockholm, best known for sinking the Andrea Doria in 1956.
MV Dali
The MV Dali is a Singapore-flagged containership that lost power and struck Baltimore's Francis Scott Key Bridge on March 26, 2024, collapsing it and killing six workers.
MV Derbyshire
MV Derbyshire, launched as Liverpool Bridge in 1976, was a British bulk carrier that sank with all 44 aboard in Typhoon Orchid near Okinawa in 1980, the largest British ship ever lost at sea.
MV Doña Paz
MV Doña Paz was a Philippine passenger ferry that collided with the oil tanker MT Vector in Tablas Strait in 1987, sinking with more than 4,000 dead, the deadliest peacetime maritime disaster in history.
MV Golden Ray
The MV Golden Ray was a 656-foot vehicle carrier that capsized near Brunswick, Georgia, in September 2019, leading to the largest wreck removal in US history.
MV Hondius
MV Hondius is a Dutch polar expedition cruise ship operated by Oceanwide Expeditions, built in Croatia in 2019 and named after the Dutch cartographer Jodocus Hondius.
MV Jernas
MV Jernas, also recorded as Jerna S, was a Bahraini general cargo ship built in 2001 that ran aground near Salalah, Oman, during Cyclone Mekunu in May 2018.
MV Princess of the Stars
MV Princess of the Stars was a Sulpicio Lines Philippine passenger ferry that capsized in the Sibuyan Sea during Typhoon Fengshen in June 2008, killing hundreds aboard.
MV Sewol (세월호)
MV Sewol, also known as MS Sewol, was a South Korean ferry that capsized and sank off Jindo County in 2014, killing 304 of 476 people aboard, including 250 students.
MV Ursa Major
The MV Ursa Major was a Russian heavy-lift cargo ship owned through the defense-linked company Oboronlogistika that sank in the Mediterranean in December 2024 after engine-room explosions.
MV Viking Sky
MV Viking Sky is a cruise ship operated by Viking Ocean Cruises, built by Fincantieri and delivered in 2017, known for a March 2019 blackout off Norway with 1,373 aboard.
MV Wakashio
The MV Wakashio was a Panamanian-flagged Capesize bulk carrier that ran aground at Pointe d'Esny, Mauritius, in July 2020, spilling roughly 1,000 tonnes of fuel oil.
Nagato-class battleship
The Nagato class (長門型戦艦) comprised two Imperial Japanese Navy super-dreadnought battleships, Nagato and Mutsu, completed in 1920 and 1921 as the first warships carrying 16-inch guns.
Nairobi International Convention on the Removal of Wrecks
The Nairobi International Convention on the Removal of Wrecks is a maritime treaty adopted in Nairobi in 2007 and in force since 2015, letting coastal states remove hazardous shipwrecks.
Nakilat
Nakilat, the Qatar Gas Transport Company, is a Qatari maritime shipping company established in 2004, owning one of the world's largest LNG fleets with 66 carriers plus ship repair and marine services.
Nantucket Lightship
The Nantucket Lightship was a United States lightship station, operating from 1854 to 1983 off Nantucket Shoals, Massachusetts, the last lightship station in the country.
Narco-submarine
A narco-submarine, commonly called a narco sub, is a homemade, low-observable watercraft built by drug traffickers to smuggle cocaine across the sea while evading detection.
Natchez (steamboat)
The Natchez is a steam-powered sternwheel riverboat offering daily jazz cruises on the Mississippi River at New Orleans. Launched in 1975, she is the ninth steamboat named Natchez.