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460 companies

Lowndes County Port, West Bank

MS, United StatesUpdated May 2026

Lowndes County Port Authority operates two barge terminals on the Tennessee-Tombigbee Waterway in northeast Mississippi, serving as a key multimodal transportation hub for industrial and shipping needs in the region.

MAAG Gear AG

Winterthur,, SwitzerlandUpdated Feb 2006

MAAG Gear AG is a global manufacturer of high power gear transmissions for marine propulsion systems, as well as gear units for cement, compressor drives, power generation, and pumps.

MACC

Hannibal, MO, United StatesUpdated May 2026
Training

Moberly Area Community College (MACC) is an educational institution offering degrees, certificates, and workforce development programs across multiple campuses in Missouri.

MSE (Consultants) Limited

Carshalton, Surrey, United KingdomUpdated Jun 2008

MSE is an independent consultancy providing engineering and software solutions to the oil and gas industry

MTU Detroit Diesel

Detroit,, Michigan, United StatesUpdated Jan 2007

MTU Detroit Diesel provides advanced diesel engines, automated transmissions, and axles for vocational trucks, focusing on performance, safety, and sustainability.

MacTaggart Scott and Co Ltd

Loanhead,, Midlothian,, Scotland.Updated Apr 2005

MacTaggart Scott is a privately owned Scottish engineering company founded in 1898, specializing in the design and manufacture of mission-critical naval products for extreme environments, primarily supporting the Naval Defence industry.

Mack Boring and Parts Co.

Union, New Jersey, United StatesUpdated Dec 2006

Mack Boring is the leading supplier for the industry's top engine, generator, and transmission brands. At 80+ years old, Mack Boring has facilities in Illinois, Massachusetts, New Jersey, and North Carolina. We're The Power Behind The Power, and we're here to serve you.

Madere & Sons Towing

Buras, LA, United States

Madere & Sons Towing provides marine towing, barge rentals, marine construction, salvage, dock facilities, fleeting, fabrication, suction dredging, and project cargo services primarily along the lower Mississippi River.

Magnate Shipping Lines Ltd.

Mississauga, Ontario, CanadaUpdated Nov 1998

Magnate Shipping Lines Ltd. is a federal corporation based in Mississauga, Canada, providing shipping and delivery services since 1990.

Maid of the Mist Corp.

Niagara Falls, NY, United StatesUpdated Nov 1998

Maid of the Mist Corp. operates iconic sightseeing boat tours at the base of Niagara Falls, serving approximately 1.6 million guests annually from April through early November. The company is launching the first all-electric, emission-free passenger vessels in the United States.

Maritime Museum Association of San Diego

San Diego, CA, United StatesUpdated Jun 2003

Non Profit member-owned 501(c)(3) corporation engaged in acquisition, restoration, display, intrepretation, and operation of nautical artifacts. With emphasis on the Age of Sail and the Age of Steam, the museum's mission is to connect current generations with their nautical heritage.

McNovick Inc.

Bow, NH, United StatesUpdated Oct 2001

McNovick supplies Exhaust Silencers, Lubricants & Lubrication Equipment and Filtration Products for all Maritime Equipment and Vessels

Memphis Port Commission

Memphis, TX, United States

The Memphis Port Commission is associated with the port facilities in Memphis, Tennessee, providing governance and oversight for port operations in the region.

Miller Centrifugal Casting Co. (MCC)

Cecil, PA, United StatesUpdated Oct 2004

Miller Centrifugal, for over 40 years has specialized in the designing, casting and finish machining of high grade centrifugally cast ferrous and non-ferrous products for industry and the military. Our products can be found in a variety of applications including power transmission, elevators, commercial and military aircraft, marine and naval vessels, as well as steel mills around the world. Our centrifugal casting process produces standard and complex contoured shapes in low, medium and high volume quantities in a broad range of copper, nickel, cobalt, iron, steel and aluminum base alloys. Processes like our unique bi-metallic worm gears and rolling mill sleeves, where two alloys are cast into one metallurgical bonded casting has the distinct advantages of both alloys. Our unique near-net-shape casting process gives us the capability to cast and machine complex irregular shapes. Sizes for all products range from 6 inches up to 120 inches in diameter with weights ranging from 25 pounds to 30,000 pounds.

Miss Barnegat Light

Barnegat Light, NJ, United States

Miss Barnegat Light offers deep sea fishing charters, offshore and inshore fishing trips, sunset cruises, dolphin cruises, and marine biology tours from Barnegat Light, NJ aboard a modern 90-foot aluminum catamaran.

Miss-Croix Yacht Harbor

Prescott, WI, United States

Miss Croix Yacht Harbor is a member-owned marina in Prescott, WI, offering covered and non-covered slips for sale and lease, full-service gas dock, boat repair services, and seasonal boat storage with convenient launching on the St. Croix and Mississippi Rivers.

Mississippi Marine Corporation

Greenville, MS, United StatesUpdated May 2026

Mississippi Marine Corporation is a full service shipyard located in Greenville, Mississippi, offering towboat and barge repair and renovation with six drydocks and specialized facilities.

Modern Transport

Winona, MN, United States

Modern Transport Terminal, Inc. in Winona, MN, provides loading, offloading, and storage services for various commodities, linking the Mississippi River, Canadian Pacific Rail, Union Pacific Rail, and the U.S. Interstate Highway System.

National Oceanic & Atmos. Adm. Corps Ops.

Seattle, WA, United StatesUpdated May 2026

The Office of Marine and Aviation Operations (OMAO) operates NOAA's fleet of research and survey ships, aircraft, and diving operations, staffed by NOAA Corps Commissioned Officers and federal civil servants. It is the largest research fleet in the U.S. federal government.

Nautical Electronics

Panama, PanamaUpdated Aug 2000

Our mission is to provide the highest quality marine Electronics Service and we back this up with our No Cure No Pay policy.

Nexans HQ

Paris,, FranceUpdated May 2026

Nexans is a global leader in sustainable electrification, providing comprehensive cabling solutions and services across the entire electrification value chain.