Lerwick Harbour is the principal port in Shetland and a key component in the islands’ economy. At the crossroads of the North Sea and North-east Atlantic, it is the most northerly commercial harbour in the country. With two entrances, the sheltered, deep-water port is open to shipping in all weather and operates around the clock, handling over 5,000 vessels annually.

Levant Fleet is one of the world's largest independent third-party ship management firms with a 24-year history, over 20,000 qualified seafarers and over 450 vessels under management.

Lincoln Maritime acting in its capacity as a Port Agent provides important and relevant information on and local support at every port of call. From making sure that essential supplies are provided, to arranging transfer of crews and documentation for customs clearances.

LGSA Marine is an independent company of marine surveyors, cargo surveyors, engineers, and consultants providing a comprehensive range of services to the insurance, maritime, shipping, risk management, transport, and energy industries. ​

Liverpool Pilots have provided safe pilotage for vessels of all types and size, navigating within the port limits of Liverpool, for over 250 years. The modern service comprises of more than 50 pilots who are all highly experienced, trained, and skilled Master Mariners, authorised to navigate within the district by the Competent Harbour Authority – The Mersey Docks and Harbour Company, a subsidiary of Peel Ports.

Lloyd's Marine Intelligence solutions are powered by SeaTech™, a unique combination of skills, data and analytics that ensure customers make decisions more quickly, identify and act on opportunities and risks more confidently, and implement efficiencies more easily.

Lloyd's Register is one of the world's renowned providers of professional services for engineering and technology, improving safety and increasing the performance of critical infrastructures for customers, in over 75 countries worldwide.

The LMAA has also a Small Claims Procedure (SCP) and an Intermediate Claims Procedure (ICP) which together offer those involved in maritime matters a wide range of choice for the resolution of disputes referred to arbitration.

LMIS was established in 2001 focusing primarily on marine based products (Hull & Machinery, and Yachts). The company has steadily grown and widened its scope however the focus has continued to remain on niche product areas, where expert knowledge and attention to detail is appreciated and they can make a real difference.

With more specialists in more locations around the globe, LOC Group balances exceptional responsiveness with on-the-ground expertise where it is needed. Since 1979, they have been tackling the most urgent and complex challenges across the shipping, renewables, oil & gas and marine assurance and risk sectors.

Lochin Marine International Limited is a British boat building and marine services business spanning more than 40 years in the industry - one of the UK's oldest continuously operating boat building companies. Building both for the commercial and leisure sectors worldwide, there are more than 500 constructions sharing the name. Lochin craft are used as lifeboats, police patrol launches, pilot tenders, passenger carriers and other applications.

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.

Providing both domestic and international logistics, Lombard Shipping works in partnership with clients to offer a range of cost-effective solutions that have been developed to meet the ever-changing demands of the industry.

London Marine Consultants Ltd (LMC) specialises in the engineering design and provision of mooring systems for FPSOs, FSRUs and FSOs including External Turrets, Internal Turrets, Disconnectable Turrets and Spread Mooring Systems. Alongside this, LMC can supply their own swivel stack systems as part of the EPC supply.

Insuring a diverse range of ship-owners and charterers, London P&I Club are one of the world’s leading Protection and Indemnity Associations, in order to provide P&I, FD&D and War Risks to cover to their international membership. From tailored solutions to flexible insurance packages – all of their work is directed at meeting their members’ specific needs.

Longitude Engineering has delivered specialist design and engineering in the marine, energy and defence markets. Their independence, expertise and experience make us the natural choice for a wide range of design solutions across Asia Pacific, Europe and North America.

Lucion is a technology-led environmental services consultancy, providing a comprehensive range of services throughout the asset lifecycle. They are a trusted partner, helping clients navigate the complex world of regulation; saving time, money and resources.

Lyons Boatyard is a long-established boat repair yard on the Stratford Canal, just to the south of Birmingham. The canal links the southwest approach of the Worcester Birmingham canal with the Grand Union Canal at Lapworth. It then meanders through beautiful rural Warwickshire to picturesque Stratford upon Avon. They provide full services to include diesel, water and pumpout, also on site is a fully stocked Chandlery.

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.

Madden Marine offers an extensive range of services to an increasingly international market, based in Belfast; the home of shipbuilding! With fit-out contracts completed from the Irish Sea, right across to the Atlantic and the Pacific, Madden Marine has earned a reputation for high quality in both production and service!

Malin Group offers a comprehensive range of services and capabilities. Their dedicated team continue to provide a solid blend of theory, experience and practical knowledge to assist clients on complex global projects. Their group of companies have been built from the ground up to offer seamless support to clients across the full range of design consultancy, marine operations and shipping, fabrication, installation and site maintenance services.

Mammoet provides solutions to lifting, transporting, installing and decommissioning projects; from large and heavy to small and delicate structures. Their engineering expertise and high quality and safety standards, deliver value to a wide breadth of industry sectors and projects.

Manor Marine Ltd is into shipbuilding services and is based out of United Kingdom.

Marine Industrial Transmissions Ltd are specialists in industrial driveline solutions, ensuring the reliability of land and marine vehicles. With extensive industry experience, their expert team provides installation, repair, and maintenance for driveline systems, including marine gear and mining equipment.

Marine AI Ltd is a software engineering firm specialising in edge-based sensor-driven cognitive artificial intelligence to deliver safety-critical marine autonomy.

Marine Data Systems Limited, a British multi award-winning manufacturer of marine navigation and control systems for civil, defense and government sectors. Their expert design and engineering team tirelessly provide innovative solutions to complex marine navigation system requirements.

Marine Debt Management is a long-established company providing specialist credit management and debt collection services to providers of goods and services to international commercial shipping.

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 Equipment Trader is into Maritime transportation and Maritime services and is based out of United Kingdom.

Marine Management Organisation (MMO) is an authority that licenses, regulates and plans marine activities in the seas and oceans around the United Kingdom, so that they're carried out in a sustainable and secure way. They help the government achieve its vision for clean, healthy, productive and biologically diverse oceans and seas.