IAPH is a non-governmental organization (NGO) headquartered in Tokyo, Japan. In November 1955, some 100 world port gathered in Los Angeles to announce the creation of IAPH.

ITOCHU provides trading services for more than 20,000 items and manages a portfolio of more than 40 group companies. ITOCHU operates in a wide variety of businesses, with particular strength in the machinery, energy & chemicals, electronics, food, forest products, chemicals, and textiles sectors.

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.

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.

Japan Marine Group is a trusted name in the marine industry and deal in Japanese, Korean and European spare parts. Their technically trained and competitive workforce strive to not only meet but exceed customers’ expectations. They are one of the most reliable suppliers, successfully serving the customers worldwide for last 18 years.

JAPAN MARINE SCIENCE INC.improves itself and contributes to society through the accomplishment of high quality, also continually improves the development of innovative skills, pursuit of decent cost and conformance of requirements, and validity of quality management system, we aim at further customizer satisfaction and credibility.

JMU is a pioneer company in the shipbuilding industry, with bases throughout Japan. Making full use of the wealth of experience and advanced technologies cultivated to date, they are aiming at further development. JMU was created by the merger of two leading-edge companies in the shipbuilding industry of Japan, Universal Shipbuilding and IHIMU.

Japan Radio is a group of communication technology professionals to work for connecting feelings and thoughts. They provide marine communication systems, marine solutions, maritime security solutions and much more.

JRTT jointly builds and owns passenger ships and cargo ships with coastal shipping companies. Since the establishment of this Joint Ownership Shipbuilding Scheme in 1959, JRTT has built over 4,000 ships. As the largest shipowners in Japan JRTT contributes to regional revitalisation and the streamlining of logistics.

JSTRA acts as a coordinator to promote tie-ups among the industries (shipbuilding and ship machinery industries and marine transport industry), academic communities (universities, research institutes and academic societies) and the administration (government and inspection organisations).

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

JFE Steel Corporation is a steelmaker engaged in the total steel-making process, taking iron ore raw material and turning it into final products. Boasting one of the world's greatest capacities for steel production, JFE Steel satisfies customers by producing steel under a corporate philosophy of contributing to society with the world's most innovative technology.

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.

Kawasaki Kisen Kaisha, Ltd. (K Line) earns the trust of customers through the provision of safe, reliable transportation and logistics services. Their aim is to become an important infrastructure for global society, and to be the best partner with customers by providing the high-quality logistics services based on customer first policy.

Keihin Dock Co., Ltd. was established in 1968 with investment from Nippon Yusen Kabushiki Kaisha as a company engaged in small ship repair business. Since their founding, the company have maintained close ties with Keihin Seiki, Keihin Corporation, and Keihin Valve Corporation, integrating industrial valve manufacturing and sales operations with these companies.

KEYS Bunkering West Japan is a coastal shipping company that supplies and sells LNG (liquefied natural gas) as marine fuel on a ship-to-ship basis. They own and operate the fuel supply vessels.

Koyo Kaiun Co., Ltd. is a renowned global chemical tanker owner operator from Japan. With more than 75 years of operational experience, Koyo fleets are all equipped with stainless steel tanks. Altogether, they transport around 500 different types of liquids, including organic and inorganic bulk liquid chemicals, acids, animal fats, edible oils, potable alcohols and clean petroleum products.

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.

Kyokuyo Shipyard Corporation are builders of merchant vessels and ships, including tankers, container carriers and reefers. Through the business and building experiences gained over decades with their international and domestic customers, Kyokuyo has acquired an invaluable treasure that is the solid reputation for holding high building standard.

Marindows creates a sustainable and fascinating future for the ‘sea.’ With the spread and promotion of maritime broadband communications, Marindows will bring all the seas that were previously out of the communication range online. High-speed, large-capacity communication promotes digital transformation at sea.

Marubeni Corporation is one of Japan’s largest trading companies (sogo shosha) with more than 160 years of history. Headquartered in Tokyo, Marubeni continues to expand its businesses across the globe, with a presence in over 65 countries and more than 130 branches and offices worldwide.

MI LNG Company, Ltd. (MI LNG) is a jointly operated LNG carrier engineering firm, augmenting MI LNG’s earlier business relating to LNG carriers. The company is a joint venture between globally renowned shipping companies - Imabari Shipbuilding Co., Ltd. and Mitsubishi Heavy Industries, Ltd. (MHI).

Mitsubishi Shipbuilding Co., Ltd. covers the maritime related businesses of Mitsubishi Heavy Industries (MHI) Group. They help propel forward the development of the maritime industry both in Japan and around the world through conventional shipbuilding and marine engineering, based on our deep technological expertise in shipbuilding, and by leveraging the wide range of technologies across MHI Group.

Mitsui E&S Machinery Co., Ltd. is developing five businesses: Marine diesel engines, various types of industrial machinery such as compressors and gas turbines, cranes centered on container cranes, social infrastructure facilities such as bridges, and after-sales servicing of products.

MOL is a pioneer company in the ocean shipping industry, operating a fleet of about 800 vessels to transport various commodities such as resources, energy, raw materials, and products. On top of the traditional shipping businesses, MOL will develop a variety of social infrastructure businesses to meet the evolving social needs.

MOL generates added value to the goods and materials they transport via their main business, international ocean shipping. Through ocean shipping, they contribute to the development of global industries and to more prosperous communities, which is part of their corporate social responsibility.

From here in Saiki City to the world's oceans, Miura Shipyard are building vessels that meet all needs, from coastal vessels to ocean-going vessels. They build a wide variety of ships such as cargo ships, oil tankers, chemical tankers, cement tankers, and passenger ferries.

MODEC is a general contractor specializing in engineering, procurement, construction and installation of floating production systems including Floating Production Storage and Offloading (FPSO) vessels, Floating Storage and Offloading (FSO) vessels, Tension Leg Platforms (TLPs), Production Semi-Submersibles.

MODEC has been a provider of solutions to the Floating Offshore Oil & Gas market for more than 50 years already. They are an owner/operator and EPCI (Engineering, Procurement, Construction and Installation) general contractor of floating production systems including Floating Production Storage and Offloading (FPSO) units, Floating Storage and Offloading (FSO) units, FLNGs, Tension Leg Platforms (TLPs), Semi-Submersibles.