International Seabed Authority (ISA) is an autonomous international organization established under the 1982 United Nations Convention on the Law of the Sea (UNCLOS) and the 1994 Agreement relating to the Implementation of Part XI of the United Nations Convention on the Law of the Sea (1994 Agreement).

Established in February 2019, iO3 PTE LTD. was established to adopt an innovative approach in the digital evolution for maritime customers today. They communicate and operate efficiently and safely in challenging maritime environments. Their digitalisation platform has been specifically designed to support enhanced integrated solutions, asset optimisation, and delivery of secured critical applications globally.

Irish Continental Group plc is the leading Irish-based maritime transport group. They carry passengers and cars, Roll on Roll off (RoRo) freight and Container Lift on Lift off (LoLo) freight, on routes between Ireland, Britain and Continental Europe. They also operate container terminals in the ports of Dublin and Belfast. The Group also carries out ship chartering activities.

Irish Ferries is an Irish ferry and transport company that operates passenger and freight services on routes between Ireland, Britain and Continental Europe, including Dublin Port–Holyhead; Rosslare Europort to Pembroke as well as Dublin Port-Cherbourg in France.

The Isalos.net initiative has as its main purpose the connection of the maritime community with the new generation while at the same time it is a knowledge platform for the developments and experiences from the maritime industry and maritime daily life.

Izumi Steel Works Ltd. was founded in 1961. The Company's line of business includes the manufacturing of steel castings including alloy, bushings, and rolling mill rolls.

James Marine, Inc. was founded by C. Ronald James in 1986. The family-owned company began with twenty-five employees and has a proud history of extraordinary service and growth to the inland waterways. With over 1,300 employees in the JMI family of companies, they have 12 locations across Kentucky and Louisiana. They proudly promote a diverse workforce with an inclusive culture that encourages creativity and a positive team environment.

Japan CCS Co., Ltd (JCCS) was founded in May 2008 when a group of major companies with expertise in CCS-related fields, including electric power, petroleum, oil development, and plant engineering, joined forces to answer the Japanese government’s call for development of CCS technology as a countermeasure against global warming. JCCS is a unique company in the world to be founded and dedicated explicitly to developing integrated CCS technology.

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.

Johnson Stevens Ireland Limited was established in 1979 by William F. Patchell (then Managing Director), Derek W. Johnson and Tom Bax-Stevens. It quickly became a major player in the Irish Liner Agency trade and retains that position today after over forty years in business. The company’s continued success is founded on an absolute commitment to the highest levels of customer service.

Jumbo is a heavy lift shipping and offshore transportation & installation contractor. Jumbo has been developing pioneering solutions for ocean transportation for more than 50 years. Since 2003, building on their heavy lift capability, Jumbo rapidly established a sound track record in the offshore subsea installation market.

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.

Founded in 1989, Kalgin Global Logistics has grown from a team of two with a small office on Sydney’s North Shore, to a passionate team of more than 40 professionals with offices in global locations, including Auckland, Brisbane, Melbourne, Sydney, Suva & Lautoka.

Kargosurge is a renowned logistics company with a strong focus on providing top-notch services to its clients. With years of experience in the industry, they have developed a deep understanding of the complexities involved in international shipping and logistics. Kargosurge offers a wide range of services that cater to the diverse needs of businesses across various industries.

Karstensen Kuldeteknikk AS are a global supplier of industrial freezing systems. Their extensive experience enables them to deliver different products to different industries. Fish processing, bakery, dairy and other are examples of this.

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.

Kongsberg Maritime is a world leader in marine technology. With an extensive portfolio of innovative and integrated products and solutions, Kongsberg Maritime delivers efficiency, reliability, flexibility, and environmental sustainability to enhance the business of its customers.

Establishing the reputation of playing a pivotal role in international cooperation in the maritime sector as an IMO-specialised organisation.

With headquarters in Austria, KRAL GmbH was founded in 1950 and has been an independent family enterprise ever since. KRAL develops and produces screw pumps and flow measurement technology. In addition, they offer customer-specific solutions for systems, from the initial engineering process through to commissioning.

In Rotterdam – Europe's most important container port – the Kramer Group offers both large and small customers the best imaginable service in virtually all aspects of container logistics.

Kumiai Senpaku Co., Ltd. fabricates livestock grain carriers, large material carriers for iron steel, LPG carriers and oil tankers in rapid succession with all-out support from their cargo owners, who are leading businesses in Japan's industry, resulting in an expanding fleet of vessels. They own a total of 20 or more oceangoing vessels in Japan and Singapore, holding the position of the top independent shipowner in Japan.

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.

Kyodo USA is one of the world's renowned suppliers of ship operation equipment and marine services. With over 20 years of experience in the international marine shipping and transportation industry, they proudly provide services to over 300 customers in over 100 countries worldwide.

Founded in 1982, Lamor Corporation has established itself as a major market leader providing state-of-the-art oil spill response, waste management and water treatment solutions, services, and equipment. The Finnish corporation has expanded its global presence in strategic markets, partnering with trusted associates, and investing in a range of companies to expand its environmental solutions capability.

Langh Ship Oy Ab offers trustworthy and efficient sea transportation service. The modern fleet of Langh Ship is capable of operating in challenging Northern conditions. They transport steel, bulk and container goods. Langh Ship is committed to taking the environment and people’s safety into consideration in all of its operations.

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.

Larsnes Mek. Verksted is a Norwegian shipyard established in 1981, specialising in the construction and outfitting of new vessels, as well as the repair and maintenance of existing ones. They are known for building fishing vessels, live fish carriers, cargo vessels, and ferries, with a strong emphasis on quality, aesthetics, and cost-effectiveness.