Japan Engine Corporation is involved in the development, design, manufacturing, maintenance, repair, sale and licensing of engines and other components. From development to after-sales service, they are the only company in the world that has an integrated system of the UE engine, which is one of the world's three largest brands of low-speed marine engines.

JERA is the largest power generation company in Japan, producing about 30% of Japan's electricity.

JET-TECH (Jet-Tech Propulsion, LLC) is a volunteer network of local Information Technology (IT) professionals providing services to help people navigate the IT profession. They are experienced professionals who offer guidance to those considering entering the field, those with any amount of experience, and those looking to transition their careers.

Kaiko Systems is an operational intelligence company that leverages manual operations to generate real-time insights for shipping companies to prevent incidents, increase operational efficiency, and reduce maintenance costs. With Kaiko Systems, crews are able to save 50% of the time on deck operations.

From sustainable seaweed production to combatting microplastic pollution to offshore wind power infrastructure, Katapult Ocean’s portfolio companies simultaneously represent the vanguard of impact ocean tech and the greatest opportunity for investment.

Together with about 100 group companies in Japan and overseas, Kawasaki Heavy Industries oversees the formation of a 'technology corporate group'.​ Their technological capabilities, polished over a history that exceeds a century, send diverse products forth into wide-ranging fields that go beyond land, sea, and air, extending from the ocean depths to space.

KBR, Inc. delivers science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 29,000 people worldwide with customers in more than 80 countries and operations in 40 countries.

Klaveness Combination Carrier ASA owns and operates a fleet of combination carriers. Its unique fleet is the most CO2 efficient deep-sea transportation system in the world emitting up to 40 % less CO2 compared to standard vessels. The fleet will grow even further in the coming years through the extensive new building program.

Kleven Group is the parent company for Kleven shipyard and Myklebust shipyard, and is one of the largest companies in Ulsteinvik besides Rolls-Royce Marine and Ulstein Group. Kleven Group had about 450 employees in 2011. The Kleven Group operates businesses within construction, repair and remodeling of vessels in Ulsteinvik, at Gursken and at rented facilities on Rovde.

KROHNE is an innovative process instrumentation and measurement solutions company operating in more than 40 countries. Through continuous research and development and consistent customer orientation, they are one of the pioneers in the industry. KROHNE Marine offers measuring solutions for the global shipping industry.

Kwant Controls BV is one of the manufacturers of ultra-modern and high-quality nautical instruments and systems. Kwant Controls provides technological innovation for nautical instruments and systems for navigation and propulsion of a wide variety of vessels.

Lambda Vision Technologies uses computer vision and deep learning to solve industry-specific, high-value problems. Achieve exceptional safety and efficiency in shipping with their advanced solution. Elevate crew vision, equip operational teams with vital insights, enable collision avoidance and ensure anti-piracy commitment.

Langh Tech designs and produces scrubbers for SOx removal from exhaust gases and water treatment units for closed loop scrubbers. Langh Tech’s mission is to find the best solutions for cleaner air and seas for the coming generations. They work tirelessly to seek out the most effective methods to reduce SOx emissions and waste in the maritime industry.

Lee Marine has grown to become Thailand’s yacht sales and service company offering a complete range of new and pre-owned vessels. Since its incorporation in 1997, Founder and Managing Director, Joshua Lee’s vision of a proficient, organised brokerage company continues to flourish. Lee Marine’s success combines passion, integrity and expertise. Lee Marine are the authorised Thailand distributors for luxury yachts.

Livewire Digital came into being in order to deliver the fastest most resilient hybrid connectivity by unlocking and bonding all available networks. The vision of the founders is to be accelerating every wireless network in the world. Combining networking knowledge with expertise in broadcast video, electronics and mechanical engineering, Livewire offer pioneering edge products and bespoke systems to a broad range of markets and organisations.

Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

London Fire Brigade is London's fire and rescue service-one of the largest firefighting and rescue organisations in the world. London Fire Brigade is the busiest fire and rescue service in the country.

Kilo Marine Electronics Ltd. was successfully acquired by Mackay Communications Inc. (dba Mackay Marine) in March 2022 and in January 2023, Kilo Marine was officially certified as Mackay Marine UK Ltd. They provide the highest level of service and attention to detail that has come to be expected from them over the last 18 years. They also now offer an even broader portfolio of products and a global network, with locations in 58+ ports worldwide.

Marflet Marine is a privately owned company dedicated to the management, operation and chartering of products and chemicals. Marflet Marine is one of the oldest privately owned Spanish Shipping companies. They have been dedicated to the management, maintenance, operation and chartering in oil products, CPPs, LPGs, and chemical maritime transport since or origin.

Marine Cathodic Protection Systems (MCPS) Ltd has over 20 years manufacturing and design experience and is a leading UK supplier of Cathodic Protection (CP) and Marine Growth Prevention Systems (MGPS) to Marine Ship Owners, Offshore Energy and Port Markets. This high level of experience ensures that MCPS fully understands and can supply corrosion and anti-fouling prevention equipment in accordance with the most stringent requirements.

The Marine Environment Protection Committee (MEPC) addresses environmental issues, under International Maritime Organization's remit. Their resolutions are published in the final report of the MEPC meeting, during which they were adopted.

Marine Learning Systems (MLS) is a rapidly growing eLearning software and services provider that caters to the unique needs of the maritime industry. Through MarineLMS, their web-based Learning Management System, maritime organisations can support their training initiatives and ultimately increase on-board safety and improve performance.

Marine-Products-Direct is a privately owned business operating with an office and warehouse in Poole, Dorset, UK. They focus on sourcing the highest quality and innovative marine products. Brands include Temo Electric Outboards, Bennett Marine Trim Tabs, Groco Marine Hardware, EchoPilot Sonar, Helly Hansen Lifejackets, Calypso ultrasonic wind meters, Anchor Lift Windlasses, Lasdrop Shaft-Seals and Rocna Anchors.

At MariTeam A/S, they understand the critical role they play in ensuring the safety and efficiency of international shipping. Their commitment to delivering competent, professional, and personal service is the cornerstone of their operations. They strive every day to exceed their expectations and provide customers with the highest level of satisfaction.

Maritec Solutions is a globally renowned company in AIS (Automatic Identification System). It is a supplier of AIS transponders (Calls A, Class B, SART, Aton, Base Station) and AIS testers (AIS test equipment). They offer international compliant products and systems to the maritime industry, as well as consulting services.

Maritime Protection is one of the world’s leading companies within engineering, design and fabrication of Inert gas systems for the offshore and shipbuilding industry. The company, which is fully owned by Survitec, has for 50 years been a company specialising in nitrogen and inert gas system for the marine and offshore industries. Maritime Protection delivers N2, IGG, FGS, Dry IGG and custom-made systems for all applications.

Maritime Research and Innovation UK (MarRI-UK) are a collaborative innovation vehicle for the UK industry and academia to jointly tackle innovation and technology challenges. They focus on research and innovation within mid TRL (3 – 7) levels to address the opportunities between 'discovery and research' and 'commercialisation' of Maritime Technologies and Systems.

The Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping ensures real climate action. They are a not-for-profit, independent research and development centre, looking to accelerate the transition towards a net-zero future for the maritime industry. With their partners, they drive and facilitate the development and implementation of new technologies and build confidence in new concepts.

Megacon is a major designer, manufacturer and international supplier of high-tech electronic products for industrial, mobile, marine, offshore, subsea or seabed applications. They offer the best competitive technical solutions to cater to a wide range of renewable energy requirements.

Mercator Limited is Mumbai-based International organisation. As a group, Mercator has diversified business interests in Coal, Oil & Gas, Commodity Transportation and Dredging.