Oceanalph is a professional company focusing on USV(Unmanned Surface Vessels) development and offering world-leading USV solutions for water environment sampling & monitoring, hydrographic survey, oceanographic survey, nuclear radiation monitoring and water surface cleaning, etc.

OceanGate Expeditions is dedicated to direct human exploration of the undersea world. Not satisfied with scratching the surface of the ocean near the shoreline, OceanGate Expeditions uses manned submersibles to create expeditions at depths far deeper than can be reached with SCUBA.

Oceanly provides the marine industry with a Fleet Performance solution for Energy Efficiency and CII.

OceanSTAR Marine & Offshore Pte. Ltd. is a Engineering Consultation company in Marine & Offshore Industry, providing professional Engineering Design, Analysis, Site Survey and Construction Support Services.

OceanWise provides applications, services and tools that enable safer and smarter management of marine operations. They specialise in marine environmental monitoring; are the leading provider of marine mapping data worldwide; and are the experts in marine data management

OCI Global is a game-changing global provider in nitrogen, methanol, and hydrogen, driving forward the decarbonisation of energy-intensive industries.

Odfjell Drilling’s commitment to sustainability is based on high ethical standards, integrity, respect for people, and care for the environment.

Off Canvas is creator of the crew-friendly Marlinspike Vessel Management software, which includes modules for (planned) maintenance, project management, crew and safety management.

Offshore Marine Management Holdings is a leading global group of companies specializing in the delivery of subsea solutions to the offshore renewables, grid, telecommunications and hydrocarbon industries.

Offshore Ship Designers (OSD-IMT) is an integrated design company with solid engineering capacity and a strong presence in the offshore markets. They design tailored vessels, offer various marine consultancy services and provide innovative conversion engineering.

The Oil and Gas Climate Initiative is a CEO-led initiative that aims to accelerate the industry response to climate change. OGCI member companies explicitly support the Paris Agreement and its aims. OGCI member companies explicitly support the Paris Agreement and its goals. As leaders in the industry, accounting for over 30% of global operated oil and gas, they aim to leverage their collective strength to achieve net zero emissions emissions.

Founded in 1921, OLDENDORFF CARRIERS combines its history as a German shipowner with the network of one of the world's leading drybulk operators. They currently control some 750 chartered and owned vessels of 67 mio tdw, and they carry around 330 mio tons of raw materials and semi-finished products across the seven seas each year. Their customers can expect 100% performance.

Oma Baatbyggeri is a pioneer in the use of aluminum as a building material. Having gained more than half a century of experience with the use of aluminum, the company emerges today as a leader in the development, design and construction of lightweight, high-speed aluminum catamarans.

Oma Baatbyggeri AS is into shipbuilding services and is based out of Norway.

OneOcean is the largest single digital solutions company in the maritime industry. The business supports nearly 20,000 vessels in their regulatory compliance and navigational activities, by providing innovative and integrated software solutions designed specifically for onboard and shoreside teams.

Opentop is the innovation HUB of Valenciaport, which seeks to become a global benchmark in open innovation in the port logistics sector, fostering the creation and growth of innovative technology companies. They are connected with major global companies, top notch mentors, and a vibrant startup ecosystem in one of the most iconic Mediterranean cities.

Opielok Offshore Carriers is a member of the Marlow Offshore Group, headquartered in Hamburg, Germany and is a technical & crew management specialist for offshore supply vessels serving the Oil & Gas and Renewables Industry.

OPUS MARINE offers a broad range of maritime services. Their business focuses on offshore wind, tidal turbine supervision, GRP pipeline installation, heavy-lift operations with floating cranes, salvage & wreck removal, vessel control coordination, diving, ammunition detection, HSEQ supervision, retail of safety appliances and rental of accommodation modules.

ORBCOMM is a pioneer in IoT technology, empowering customers with insight to make data-driven decisions that help them optimise their operations, maximize profitability and build a more sustainable future. With 30 years of experience and one of the most comprehensive solution portfolios in the industry, ORBCOMM enables the management of over a million assets worldwide for a diverse customer base spanning transportation, and supply chains.

Orbit Communication Systems Ltd., a pioneering provider of airborne communications and satellite-tracking maritime and ground-station solutions, is helping to expand and redefine how they connect. Orbit systems on airliners and jet fighters, cruise ships and navy vessels, ground stations and offshore platforms. They deliver innovative, cost-effective and highly reliable solutions to commercial operators, major air forces and navies.

Orbital Marine Power (Orbital) is a visionary, Scotland-based, renewable energy company focused on the development and global application of its pioneering floating turbine technology. Orbital’s innovative, approach de-risks the commercial extraction of low carbon energy from fast-flowing currents by offering low manufacturing and installation costs as well as the ability to carry out inexpensive, quick servicing on all major turbine components.

OrbitMI is a Software-as-a-Service (SaaS) company headquartered in New York City. Clients use Orbit, the world’s best vessel performance and maritime intelligence platform to manage global fleets more efficiently, profitably and sustainably. Together, make a positive impact on the world.

Orcades Marine is a leading provider of Marine Project Management and Consultancy Services to the Offshore Renewable Energy Sector, Shipping and Port industry. Based in the stunning Orkney Isles, they pride themselves on providing the most economic and practical solution for project requirements.

Since its founding in 1964 as a leasing company, ORIX has expanded its operations to neighbouring domains backed by the accumulated expertise. ORIX will continue to anticipate market trends in the ever-changing social and business climate. Through provision of innovative financial services at a global scale, they cultivate new businesses and opportunities for investment, thereby contributing to society.

OSM Maritime Group is the leading provider of full-service solutions to the Offshore and Maritime industries. OSM Maritime Group brings over 30 years of experience in the Maritime Industry, more than 17,000 employees, more than 20 office locations, over 700 vessels under management, and a 90% retention to the table.

OSM Maritime's core services are Ship Management (tankers, bulkers, offshore, offshore wind and cruises) and Crew Management. Additionally, they offer the following services: Ship Energy Efficiency, New Building Supervision, Ship Recycling, Maritime Insurance and Claim Handling, OSERV Catering, Crew Recruitment and Lay-Up Management.

Osprey Technical Consulting Ltd. is one of the most respected marine electronics consultancies in the world. Their engineers work for in compliance of British Marine Electrical and Electronics Association and National Marine Electronics Association codes of practice. Training is a priority at Osprey, ensuring the team is leading the marine industry innovation and that all projects are in expert hands.

OSS Maritime Group Pty Ltd is an Australia-based, pioneering marine supply and repair organisation with an excellent 20 plus years records in Maritime Industry. OSS prides itself on its’ and quality services. We have been increasing our market in Australia and overseas.

OXE Marine develops and manufactures a patented outboard transmission, enabling the use of high torque diesel engines on outboard systems and in sterndrive solutions. OXE Marine is the company behind the world’s first high-performance diesel outboard engine, OXE Diesel, setting new standards for durability, fuel-efficiency and low emissions.

Oxley Marine Engineering sells and repairs engines in South West Devon. Their workshop is in Brixham and they are an authorised Beta Marine, Perkins and Separ supplier. They also sell pre-owned engines that they test and offer breakdown services. They work primarily on diesel engines for private and commercial boats, and supply Perkins and Beta Marine engines, which they believe last over time.