Marine Diesel Engine Market Report 2025

The marine diesel engine market size has grown strongly in recent years. It will grow from $8.3 billion in 2024 to $8.88 billion in 2025 at a compound annual growth rate (CAGR) of 7.1%. The growth in the historic period can be attributed to demand from commercial shipping, growth in cruise industry, rise in offshore oil and gas activities, expansion of naval forces, demand from fishing industry.

The marine diesel engine market size is expected to see strong growth in the next few years. It will grow to $12.44 billion in 2029 at a compound annual growth rate (CAGR) of 8.8%. The growth in the forecast period can be attributed to rising global trade activities, stringent emission regulations, expansion of offshore wind energy, shift towards electrification, rise in cruise and passenger ship demand. Major trends in the forecast period include emissions regulations compliance, fuel efficiency, shift towards hybridization, adoption of LNG as fuel, digitalization and smart engines.

The anticipated increase in seaborne trade is poised to drive the expansion of the marine diesel engine market. Seaborne trade, involving the transportation of goods between two countries, relies on shipping as the most fuel-efficient means. Marine diesel engines play a pivotal role in seaborne trade due to their cost-effectiveness, non-flammability, and energy efficiency. According to the United Nations Conference on Trade and Development (UNCTAD) in 2022, international maritime trade witnessed a 3.2% growth in 2021, with shipments reaching 11 billion tons. Asia retained its position as the leading sea cargo region, handling approximately 42% of global cargo in Asian ports. This amounted to 4.6 billion tons of cargo and 64% of goods unloaded globally in 2021. Consequently, the surge in seaborne trade is a significant catalyst for the marine diesel engine market.

The anticipated rise in military spending is expected to further propel the growth of the marine diesel engine market. Military spending involves allocating financial resources for defense-related purposes, including equipment, personnel, operations, and infrastructure. Marine diesel engines are essential for naval vessels, providing reliable and efficient power for diverse maritime operations. As reported by the Stockholm International Peace Research Institute in April 2023, North American military spending reached $904 billion in 2022, marking a 0.7% increase from the previous year. Additionally, Canada's military spending rose by 3% to $26.9 billion in 2022. Hence, the increasing military spending serves as a driving force for the marine diesel engine market.

Leading companies in the marine diesel engine market are strategically focusing on the development of technologically advanced engines using platforms such as a modular technology platform. This approach involves designing engines with independent and interchangeable components or modules. In September 2022, Wärtsilä Corporation, based in Finland, introduced the Wärtsilä 25 medium-speed 4-stroke engine. Built on Wärtsilä’s modular technology platform, this engine enhances flexibility for shipowners and operators, operating on diesel, LNG, or carbon-neutral biofuels. Upgradeable to future carbon-free fuels and aiming to be the first engine running on ammonia, it incorporates efficient turbocharging, common-rail high-pressure fuel injection technology, and advanced control systems for optimal combustion and fuel efficiency.

Prominent companies in the marine diesel engine market are actively developing auxiliary engines with the integration of advanced systems, including a self-priming fuel system, to gain a competitive advantage. A self-priming fuel system automatically removes air from fuel lines, ensuring the fuel pump remains primed for efficient engine starting. In September 2023, Perkins, a UK-based provider of diesel engines, launched the Perkins E44 and E70B auxiliary engines. These engines, used in various applications, offer high-power density, fuel efficiency, and low maintenance. Featuring a self-priming fuel system, no zinc anodes, automatic valve lash adjustment, and self-tensioning belts, they provide exceptional uptime with a 500-hour service interval.

In January 2022, Langley Holdings Plc, a UK-based engineering services provider, completed the acquisition of Bergen Engines for $99 million. This acquisition aligns with Langley's net-zero goals, as Bergen Engines is known for its innovative efforts to convert engines to low-carbon and non-fossil fuels. Bergen Engines, based in Norway, specializes in manufacturing medium-speed gas and diesel propulsion engines and generator sets for commercial marine applications.

Major companies operating in the marine diesel engine market include Caterpillar Inc., Cummins Inc., HHI Engine & Machinery Co. Ltd., Deere & Company, MAN Energy Solutions SE, AB Volvo Penta, YANMAR Marine International, STX Engine, Daihatsu Diesel Mfg. Co. Ltd., Deutz AG, IHI Power Systems Co. Ltd., Perkins Engines Company, Bergen Engines AS, China Shipbuilding Industry Corporation Diesel Engine Co. Ltd., Japan Engine Corporation, Mitsubishi Heavy Industries Ltd., Wärtsilä Corporation, Hyundai Heavy Industries Co. Ltd., WinGD, Siemens Energy AG, General Electric Company, MTU Friedrichshafen GmbH, Scania AB, Anglo Belgian Corporation, ABC Diesel AG, Fairbanks Morse Engine, Doosan Engine, Yanmar Co. Ltd., Moteurs Baudouin, Cooper Corporation.

Asia-Pacific was the largest region in the marine diesel engine market in 2024. North America is expected to be the fastest-growing region in the global marine diesel engine market report during the forecast period. The regions covered in the marine diesel engine market report are Asia-Pacific, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the marine diesel engine market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

A marine diesel engine is an internal combustion engine with a reciprocating motion that combusts either diesel or a combination of fuels. Its primary function is to drive the ship's propeller, facilitating the vessel's movement through the water.

The main types of marine diesel engines are categorized as auxiliary and propulsion engines. An auxiliary engine is designed to ensure uninterrupted electrical power distribution from the bow to the stern, providing electricity to operate the ship's electrical equipment. Marine diesel engines are further classified based on their speed into low-speed, medium-speed, and high-speed 2-stroke and 4-stroke engines. Additionally, these engines are characterized by their power capacity, with classifications including < 1,000 HP, 1,000-5,000 HP, 5,001-10,000 HP, 10,001-20,000 HP, and >20,000 HP. These engines find applications in various sectors such as merchant shipping, offshore operations, cruise and ferry services, naval vessels, and other marine applications.

The marine diesel engine market research report is one of a series of new reports that provides marine diesel engine market statistics, including marine diesel engine industry global market size, regional shares, competitors with a marine diesel engine market share, detailed marine diesel engine market segments, market trends and opportunities, and any further data you may need to thrive in the marine diesel engine industry. This marine diesel engine market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.

The marine diesel engine market consists of sales of engine flexes, engine oil coolers, heat exchangers, pumps, and related products. Values in this market are ‘factory gate’ values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD, unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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