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CSSC Marine Engine Subsidiaries (Hudong, Dalian, CMD, Yichang)

CSSC (China State Shipbuilding Corporation) marine engine subsidiaries collectively produce approximately 30% of the world’s slow-speed two-stroke marine engines by total kW. The principal subsidiaries are Hudong Heavy Machinery (HHM) in Shanghai, Dalian Marine Diesel Works (DMD) in Dalian, CSSC-MES Diesel (CMD) in Shanghai, Yichang Marine Diesel (YMD), and CSSC Marine Power (CMP). All produce both MAN B&W-licensed and WinGD-branded slow-speed two-stroke engines. CSSC’s 2019 merger with CSIC (China Shipbuilding Industry Corporation) consolidated Chinese marine engine production under one state-owned umbrella. CSSC has owned WinGD entirely since June 2016. This article covers CSSC marine engine subsidiaries’ history, capacity, products, and global market position. Visit the home page or browse the calculator catalogue for related propulsion engineering tools.

Contents

Background

China became the world’s largest shipbuilder by tonnage during the 2010s, overtaking South Korea and Japan. Marine engine production in China grew alongside, with state-owned shipbuilding conglomerates building substantial engine manufacturing capacity. By 2020s, Chinese-built marine engines accounted for approximately 30% of global slow-speed two-stroke production by kW.

CSSC (China State Shipbuilding Corporation) is the principal Chinese state-owned shipbuilder, formed in 1999 from a portion of the original China State Shipbuilding Corporation. After the 2019 merger with CSIC (China Shipbuilding Industry Corporation, the other major Chinese state shipbuilder), CSSC became the world’s largest shipbuilding group by assets and tonnage.

CSSC’s marine engine production occurs through multiple subsidiaries, each focused on different engine sizes, geographic markets, or product specialisations. The principal CSSC marine engine subsidiaries are:

  • Hudong Heavy Machinery (HHM) — Shanghai
  • Dalian Marine Diesel Works (DMD) — Dalian
  • CSSC-MES Diesel (CMD) — Shanghai
  • Yichang Marine Diesel (YMD) — Yichang
  • CSSC Marine Power (CMP) — various

This article covers each subsidiary plus the broader corporate context of CSSC ownership of WinGD and the strategic significance of Chinese marine engine production.

Corporate context

CSSC + CSIC merger (2019)

In November 2019 China’s State-owned Assets Supervision and Administration Commission (SASAC) approved the merger of CSSC and CSIC. The reorganisation completed in September 2020, with the combined entity retaining the CSSC name. Combined entity characteristics:

  • ~20% of global shipbuilding capacity by tonnage
  • ~US$110 billion in assets
  • >200,000 employees
  • World’s largest shipbuilding group

The merger consolidated Chinese marine engine production under one corporate umbrella, with all major Chinese state-owned engine builders (Hudong, Dalian, Yichang, etc.) brought under CSSC.

WinGD ownership

CSSC owns WinGD (Winterthur Gas & Diesel) entirely (100% ownership since June 2016). WinGD is the slow-speed two-stroke design house in Switzerland; CSSC is the production parent. This vertical integration gives CSSC unique advantages:

  • Direct access to WinGD design technology
  • Coordinated R&D and production planning
  • Strategic flexibility on Chinese vs export production volume
  • Full control of WinGD’s commercial direction

The relationship is unusual in the marine engine industry, where typically OEMs and license-builders are separate companies.

Strategic significance

Chinese marine engine production is strategically important for several reasons:

  • Industrial sovereignty: domestic engine production reduces dependence on Korean and Japanese imports
  • Shipbuilding integration: many CSSC shipyards source engines from CSSC subsidiaries
  • Export potential: Chinese-built engines are increasingly exported to non-Chinese yards
  • Industrial development: marine engine R&D contributes to broader Chinese industrial capabilities

Hudong Heavy Machinery (HHM)

Background

Hudong Heavy Machinery Co., Ltd. (HHM) is the largest CSSC marine engine subsidiary by output. Located in Shanghai, HHM operates at the Hudong-Zhonghua shipyard complex in the Pudong district.

Production

  • Annual production: ~120-150 large-bore engines per year
  • Total kW: approximately 2.5 million kW per year
  • Cumulative production: substantial across decades of operation

License relationships

HHM holds licenses for both:

  • MAN B&W (Everllence) — for ME-C, ME-GI, ME-LGIM, etc.
  • WinGD — for X-series, X-DF, and emerging X-DF-A, X-DF-M

HHM’s WinGD relationship is privileged given CSSC’s full ownership of WinGD. WinGD designs are built at HHM with close engineering coordination.

Product range

Full range of slow-speed two-stroke engines from approximately 35 cm to 95 cm bore. Specific applications include:

  • LNG carriers (X-DF dominant)
  • Container ships (mix of ME-C and X-series)
  • Tankers (mix of ME-C and X-series)
  • Bulk carriers

Customer base

HHM supplies primarily Chinese shipyards within the CSSC group:

  • Hudong-Zhonghua Shipbuilding (same complex)
  • Jiangnan Shipyard
  • Shanghai Waigaoqiao Shipbuilding (SWS)
  • Other CSSC subsidiary yards

Some export to non-CSSC Chinese yards and limited export to non-Chinese yards.

Dalian Marine Diesel Works (DMD)

Background

Dalian Marine Diesel Co., Ltd. (DMD) is located in Dalian, in northeast China. DMD was originally part of CSIC (China Shipbuilding Industry Corporation, before the 2019-2020 merger) and is now a CSSC subsidiary.

Production

  • Annual production: ~80-120 large-bore engines per year
  • Total kW: approximately 1.5-2 million kW per year

License relationships

DMD holds licenses for both MAN B&W and WinGD slow-speed two-stroke engines.

Customer base

DMD supplies:

  • Dalian Shipbuilding Industry Co. (DSIC) — the major shipyard at the same Dalian complex
  • Other northern Chinese shipyards
  • Limited export to international customers

Strategic significance

DMD’s location in Dalian gives it strategic positioning for northern Chinese shipbuilding and proximity to Korean engine industry for benchmarking and competitive context.

CSSC-MES Diesel Co., Ltd. (CMD)

Background

CSSC-MES Diesel Co., Ltd. (CMD) is a Shanghai-based marine engine builder with historical roots as a joint venture vehicle between CSSC and Mitsui (Japan). The “MES” in the name refers to Mitsui Engineering & Shipbuilding (now Mitsui E&S).

Joint venture history

The CMD joint venture was established in earlier decades to combine Chinese production capacity with Japanese (Mitsui) engineering expertise on MAN B&W-licensed engines. CMD has continued operating through multiple corporate transitions.

Production

  • Annual production: ~60-80 large-bore engines per year
  • Total kW: approximately 1-1.5 million kW per year

License relationships

Primarily MAN B&W license production. CMD has also been at the forefront of WinGD engine production since CSSC ownership of WinGD.

Notable achievement

CMD built the world’s first CMD-WinGD 9X92DF-2.0 iCER engine in 2023, demonstrating CMD’s role in cutting-edge alternative-fuel engine production. The 9X92DF-2.0 is the largest WinGD dual-fuel engine variant, and the iCER (intelligent Control by Exhaust Recirculation) is the methane-slip-reducing technology.

Yichang Marine Diesel Engine Co. (YMD)

Background

Yichang Marine Diesel Engine Co., Ltd. (YMD) is located in Yichang, in central China. YMD is a smaller CSSC subsidiary specialising in mid-size marine engines and components.

Production

  • Annual production: ~30-50 large-bore engines per year
  • Total kW: approximately 0.5-1 million kW per year

License relationships

YMD holds licenses for both MAN B&W and WinGD designs, focusing on mid-size and smaller large-bore engines.

Strategic role

YMD provides production capacity for Chinese shipyards in central China, including Yichang’s own shipbuilding capacity and serving customers in central and western Chinese provinces.

CSSC Marine Power Co. (CMP)

Background

CSSC Marine Power Co., Ltd. (CMP) is a CSSC subsidiary covering various marine power equipment, including engines. CMP integrates several historical Chinese marine engine activities into one corporate vehicle.

Production

CMP’s specific production volumes are not publicly disclosed but are part of the broader CSSC marine engine output.

Combined production

Total CSSC marine engine output

Combined Chinese marine engine production across all CSSC subsidiaries:

  • Annual production: ~300-400 large-bore engines per year
  • Total kW: approximately 5-7 million kW per year
  • Global share: approximately 30% of world slow-speed two-stroke production by kW

These figures put combined Chinese marine engine production at roughly equal to Korean (HHI-EMD + Hanwha Engine combined) and significantly above Japanese (Mitsui E&S DU + J-ENG + Kawasaki) production.

Geographic distribution

Within China, marine engine production is concentrated in:

  • Shanghai (HHM, CMD): primary production hub
  • Dalian (DMD): northern China hub
  • Yichang (YMD): central China presence
  • Other locations: smaller specialty production

This distribution mirrors the geography of Chinese shipbuilding, with major shipyards near major engine plants.

Product range

CSSC subsidiaries collectively produce:

MAN B&W (Everllence) variants

  • MC, MC-C, ME-B, ME-C
  • ME-GI (LNG dual-fuel)
  • ME-LGIM (methanol dual-fuel)
  • ME-LGIA (ammonia dual-fuel) — in development for production

WinGD variants

  • X-series mainstream (X35 through X92)
  • X-DF (LNG dual-fuel)
  • X-DF2.0 with iCER
  • X-DF-M (methanol)
  • X-DF-A (ammonia)

Bore range: 35-95 cm. Power range: ~3,500 kW to ~87,000 kW.

Strategic position

Vertical integration

The CSSC corporate structure provides extensive vertical integration:

  • CSSC designs (via WinGD) and builds (via subsidiaries) engines
  • CSSC also owns major Chinese shipyards (Hudong-Zhonghua, Jiangnan, Dalian, etc.)
  • Engines flow from subsidiary engine plants to subsidiary shipyards
  • Coordination of design, production, and assembly is internalised

This integration is unusual in the marine engine industry. MAN B&W (Everllence) and Mitsubishi UE both license to independent builders (HHI-EMD, Hanwha Engine, Mitsui E&S DU, J-ENG); only CSSC has the full design-to-shipyard chain in one corporate group.

Government industrial policy

CSSC marine engine production is supported by Chinese government industrial policy:

  • State-owned status provides capital access
  • Strategic priority on shipbuilding industry
  • R&D subsidies for alternative-fuel and advanced engine development
  • Coordinated industrial planning

Market growth trajectory

Chinese marine engine production has grown from minor to major over two decades:

  • 2000: ~5% of world production
  • 2010: ~15% of world production
  • 2020: ~25% of world production
  • 2024: ~30% of world production
  • 2030 (projected): 35-40% of world production

This trajectory reflects broader Chinese industrial development and the continued growth of Chinese shipbuilding capacity.

Industry significance

Geopolitical considerations

CSSC’s dominance of one-third of world marine engine production raises geopolitical considerations. Concentration of critical infrastructure in any single country creates supply-chain vulnerability for global shipping. Major disruption to Chinese marine engine production would significantly impact global ship deliveries.

Engineering capability

CSSC’s engineering capability has grown alongside production volume. CSSC subsidiaries are no longer purely production sites but include substantial engineering teams supporting:

  • License production with OEM coordination
  • Local adaptations for Chinese fuel and operating conditions
  • Joint R&D with WinGD on advanced engines (ammonia, methanol)
  • Production engineering and quality assurance

Service support

CSSC marine engine service organisations support Chinese-built engines globally:

  • Spares supply for engines built at CSSC subsidiaries
  • Service support for Chinese-flag vessels
  • Some service for non-Chinese-flag vessels with Chinese-built engines

Future outlook

Continued expansion

CSSC’s strategic plans include:

  • Further capacity expansion at Shanghai and Dalian sites
  • New production lines for alternative-fuel engines
  • Continued R&D investment via WinGD
  • Export-market growth

Alternative-fuel leadership

CSSC subsidiaries are at the forefront of alternative-fuel engine production:

  • World’s first 9X92DF-2.0 iCER (CMD, 2023)
  • X-DF-A ammonia production (HHM and CMD)
  • Methanol X-DF-M production for COSCO orders

Geographic expansion

CSSC may expand engine production to additional locations as Chinese shipbuilding grows. Possible new production sites have been discussed periodically.

Service network growth

As Chinese-built ships age and require major overhauls, CSSC’s global service network will need to expand to support the growing fleet of Chinese-built engines.

See also

References