Department for Energy Security and Net Zero (DESNZ) is focused on the energy portfolio from the former Department for Business, Energy and Industrial Strategy (BEIS), in the United Kingdom (UK) government.

Derry Bros Shipping Ltd specialise in solving the shipping requirements throughout the UK, Ireland, Europe and beyond.

Destini Marine Safety Solutions has emerged as the reliable go-to partner in total marine management, providing a single-point of contact for servicing, inspection, supply chain management and storage preservation.

DFDS provides ferry and transport services in the whole of Europe continent. They deliver high reliability through ferry & port terminal services and transport & logistics solutions.

DH Marine has grown into an experienced and multi-skilled workforce- on a typical day they may be working shifts to diagnose and repair faults on an oil & gas support vessel, maintaining and replacing harbour infrastructure equipment, providing technical support to customers operating in the vital fishing sector, overhauling an engine for a private customer or delivering and installing a generator and transformer for their plant hire division.

Dickies Marine Services Ltd is a family-run business with over 100 years of professional experience in the marine industry they can deliver to the boating needs.

Discovery Shipyard build the finest blue water cruising yachts. The Discovery Brand encompasses Discovery Yachts, Southerly Yachts, Revelation Yachts and Bluewater Catamarans. Since 1998 our marques have endeavored to create the highest quality blue water cruising yachts, designed to sail owners and crew around the World in superior comfort and safety.

Diving Status is a global major company in one-stop-shop maritime solutions. Spanning industries from commercial shipping and superyachts to offshore oil and gas, marine constructions, and beyond, they’re a trusted partner for all things maritime.

Djurgårdens Färjetrafik operates the Djurgårdsfärjan ferry, line 82, on behalf of SL. The Djurgårdsfärjan ferry operates in Stockholm's port area between Slussen, Skeppsholmen and Allmänna Gränd on Djurgården. Djurgårdens Färjetrafik AB is 50% owned by Strömmagruppen and 50% by Serco Holding Ltd.

DKT Allseas started as the exclusive liner agency for Shipping Corporation of India (SCI) offering FCL, OOG and breakbulk services from the UK and the Indian Subcontinent. They offer a wide range of both containerised and specialist cargo agency services acting on behalf of SCI, Bahri Shipping, Ceekay, Emkay, Rodymar and Nepal Shipping. Plus, their very own shipping line operated via charter, China Xpress.

DOCKSPEC Marine delivers turn-key consulting and project management support services in the Shipyard, Maritime (commercial and private), Renewables and Offshore sectors. Their flexible working approach, coupled with support from skilled Global Alliance Colleagues, provides clients a much higher probability of achieving their objectives at a lower cost.

Doen Waterjets are renowned designers and manufacturers of waterjet propulsion systems, focused on offering best-of-class waterjet products that excel in the harsh operating conditions of the commercial and military marine markets. Nearly 50 years of ongoing R&D and a solid track record of developing innovative waterjet propulsion solutions puts it in a unique position to partner with designers, boat builders and operators.

Dogger Bank Wind Farm is an offshore wind farm being developed in three phases – Dogger Bank A, B and C – located between 130km and 190km from the North East coast of England at their nearest points. Each phase will have an installed generation capacity of 1.2GW and represents a multi-billion pound investment. Combined, they will have an installed capacity of 3.6GW and will be capable of powering up to 6 million homes.

Donjon Shipbuilding & Repair utilizes years of experience and knowledge to meet the needs of an ever-expanding industry to provide shipbuilding, dry-docking and related services. Headquartered in Erie, Pennsylvania, Donjon Shipbuilding & Repair offers affordable, quality service that meets the highest maritime industry standards, and its commitment to the customer is unmatched.

Founded by Denis Francis Doyle in 1886 in Cork, DSG has transformed from a small stevedoring operation to an organisation that wants to improve the opportunities, businesses and lives of those connected to it. Having established themselves on the quays in Cork, where they still operate to this day, DSG has remained true to that core by focusing on building their business in areas which they have the experience and skill to better serve customers.

DP World (Drydocks World) are a globally renowned provider of worldwide smart end-to-end supply chain logistics, enabling the flow of trade across the globe. Their comprehensive range of products and services covers every link of the integrated supply chain – from maritime and inland terminals to marine services and industrial parks as well as technology-driven customer solutions.

Drewry is a major international provider of research and consulting services to the maritime and shipping industry. From its origins in 1970 London to a 21st century maritime and shipping consultancy, Drewry has established itself as one of the most widely used and respected sources of impartial market insight, industry analysis and advice.

DSD Shipping Singapore is affiliated with DSD Shipping AS. Det Stavangerske Dampskibsselskab (DSD) AS, located in Stavanger, on the west coast of Norway, was established in 1855 and is thus proud of being one of Norway's oldest shipping companies. DSD Shipping AS, a subsidiary of DSD AS, was established in 1989 to manage the parent company's vessels in International trade.

DSV - Global Transport and Logistics provide and manage supply chain solutions for thousands of companies everyday, ranging from the small family-run businesses to the large global corporations. They want to be a leading global supplier, fulfilling customer needs for transport and logistics services, targeting extensive growth and being among the most profitable in the maritime and shipping industry.

DTN is a global, data, analytics and technology company. Its proprietary solutions and expertise deliver trusted operational intelligence for organizations with complex supply chains worldwide. Access to the unparalleled, cloud-based data, applications and insights that DTN offers help businesses prosper, improving service delivery and the movement of goods for many critical sectors of the global economy.

du Pré Marine advises on, supports, and supplies the very best of specialist maritime navigation, security and safety equipment for the most demanding applications at sea. Specialist navigation, security and safety equipment for commercial marine, military vessels, superyachts and leisure craft

Dublin Stevedores Ltd. is a fully Irish owned family business with a tradition dating as far back as 200 years in Dublin Port. They are an independent operator within the port, providing long term contracts to the multinationals and are favoured by most independent shipping and forwarding agents.

DUODRIVE LIMITED is a maritime company based on TeesSide at the Port of Middlesbrough, United Kingdom.

Dura Composites is a global manufacturer, designer and supplier of fibreglass and composite timber products for the marine and shipping industry, with over 25 years experience in the maritime sector.

DW Mechanical Handling is an approved River Canal Rescue contractor, providing a full river breakdown service. They have field service engineers with a van that will attend the site of your breakdown, wherever you are and undertake the work/repair you require.

Echandia is powering a new era. Maritime is being electrified and Echandia is part of the solution. Echandia Group AB is headquartered in Stockholm, Sweden with a fuel cell arm and R&D in Canada. Echandia develops heavy-duty LTO battery systems and integrated fuel cell solutions for applications in maritime and industrial use.

Echomaster Marine are a UK distributor, and supplier, of Marine Electronics for Fishing, Commercial and Recreational customers. Founded in 2005, their mission is to provide customers with the traditional values of quality customer service, professional advice, competitive pricing and guaranteed satisfaction.

Green Electricity didn't exist in the world back in 1996. When Ecotricity offered it for the first time, it became not just Britain’s but the world’s first Green Electricity company – and they kick-started the now global Green Electricity movement. Their mission was and remains to change the way electricity is made and used in Britain.

Established in 2015, Edda Wind is a provider of purpose-built Service Operation Vessels (SOV) and Commissioning Service Operation Vessels (CSOV) to the global offshore wind market. Their vessels accommodate wind turbine technicians and provide services during the commissioning and operation of offshore wind farms.

EdgeTech is a global manufacturer of underwater technology solutions. The company is known worldwide for its high quality products, which include: side scan sonars, sub-bottom profilers, bathymetry systems, AUV and ROV-based sonar systems, combined and customised solutions. EdgeTech also provides reliable USBL systems, transponder beacons, deep sea acoustic releases, shallow water and long-life acoustic releases, MRUs, etc.