Onomichi Dockyard Co Ltd, established in 1943 in Hiroshima Prefecture, specializes in shipbuilding, ship repair, and construction, producing a variety of high-performance vessels including bulk carriers, tankers, and Ro/Ro cargo ships.
Ontario Waterway Cruises, Inc. offers peaceful and inspiring river cruises on Ontario's heritage waterways aboard the 45 passenger Kawartha Voyageur riverboat, providing traditional meals and a friendly atmosphere.
Hopkinton, New Hampshire, United StatesUpdated May 2026
Optimar, Inc. is a maritime technology company specializing in hydrodynamics, hull design, and environmental risk assessment for various vessel types including ferries and fast ferries.
Calgary-based consulting company providing practical training courses and consulting for formation water interpretation and QGIS tutorials for the petroleum industry.
Oregon International Port of Coos Bay is Oregon's second busiest maritime commerce center, featuring the largest deep-draft coastal harbor between San Francisco Bay and Puget Sound, serving domestic and international markets with diverse cargoes including wood products, pulp, paper, and petroleum.
Oregon Sandblasting & Coatings provides industrial coating services including blasting, liquid, powder, and specialty finishes, all performed in-house.
Oregon State University's College of Earth, Ocean, and Atmospheric Sciences operates marine research facilities at the Hatfield Marine Science Center in Newport, OR, serving as home port for research vessels including the RV Elakha and the RV Taani (under construction).
Orfanos Contractors Inc. is a Baltimore, Maryland-based marine and commercial contracting company specializing in waterfront and port construction, including pier and dock construction.
TST Orgem Shipping & Trading Co Ltd provides high-quality ship provision supply services across all Turkish ports and straits, offering a wide range of food, beverages, technical support, and cabin equipment with 34 years of experience.
Largest ship's chandler in Korea covering all Korean ports with branch offices, providing duty free provision, shipstore, bunkering, running repair services, and general shipping agency.
Orient Ship Management Norway AS provides ship management services including technical management, crewing, and operational support for maritime vessels.
Oriental Commercial & Shipping Company Limited is a Saudi-based freight and logistics provider specializing in agency services for handling discharge/loading of container, general, and project cargo, as well as ship supplies and husbandry matters at Saudi Arabian ports.
Orion Engineering Services Ltd provides global recruitment and workforce solutions specializing in energy, engineering, and technical sectors including offshore and subsea vessel operations.
Orion Ropeworks is a premium cordage supplier with over 150 years of experience, manufacturing and distributing durable rope and cordage products for various industries including commercial and pleasure marine sectors.