Recently, CSSC Saisiyi successfully completed its 1,000th on‑board project since its establishment: the electric propulsion system for the Zhuhai Jiahai 2,000‑ton research vessel. With this milestone, the company’s inaugural “Thousand‑Ship Program”—a testament to resilience, innovation, responsibility, and recognition—has officially come to a successful close.

In the spring of 2021, Wuxi Saisiyi—then still an unknown player—first introduced its “Hundred-Vessel Road.” Through relentless effort, it surpassed the hundred‑vessel milestone within two years and went on to reach three hundred vessels. In the autumn of 2023, CSSC Saisiyi officially announced the launch of its Thousand‑Vessel Initiative, setting its sights on even loftier goals. In just three short years, building on its foundation of three hundred vessels, Saisiyi achieved a remarkable leap in scale, expanding its footprint from one hundred to one thousand ships.

S-DE Diesel-Electric Propulsion System
Core technologies have been successfully deployed, with large-scale applications across niche segments such as research vessels, wind‑energy and offshore engineering vessels, luxury inland river cruise ships, oil‑and‑gas offshore platforms, and small‑ to medium‑sized commercial vessels.

In the field of diesel–electric propulsion systems, CSSC SAIYI’s core technologies for DC grid‑based power distribution and electric propulsion have been deployed at scale in key applications, including research vessels, wind‑farm support vessels, luxury inland cruise ships, oil and gas offshore platforms, and small to medium‑size commercial vessels. To date, these systems have been installed on a total of 146 commissioned vessels, with 75 ships delivered, representing a combined propulsion power capacity of 459 MW and an average propulsion power of 3.1 MW per vessel.

In 2018, CSSC Saisiyi obtained the first domestic certification for DC‑networked products from a Chinese classification society, officially entering the marine electrical systems sector and quickly gaining widespread industry attention through the successful deployment of the vessel “Shen Kuo.” From 2019 to 2023, as the offshore wind power industry entered a period of intensive construction, CSSC Saisiyi seized market opportunities, securing contracts and delivering more than 20 large offshore wind‑installation vessels, including the “Huadian Wenqiang,” “Hailong Fengcai,” and “Hengtong Haiyue,” thereby establishing a strong foothold in the offshore wind‑related marine engineering vessel segment.

During the same period, DC‑based power systems were progressively installed on luxury inland cruise ships such as the “Meiwei Hyatt,” “Shencheng Zhi Guang,” “Shuangyong,” and “Shanghai Zhi Xing.” The products’ adaptability and real‑world operational performance were validated through actual projects, enabling Saisiyi to establish a strong reputation in the marine electric propulsion market.

Since 2024, the oil, gas, and offshore engineering market—long dormant—has experienced a robust recovery and rapid growth. CSSC Saisiyi’s diesel–electric propulsion systems have seen an increasing number of successful deployments in the offshore oil and gas sector. Notably, its diesel–electric powertrain paired with containerized mobile battery solutions has been adopted for multiple large platform supply vessel projects, with the total installed battery capacity exceeding 25,000 kWh.

Meanwhile, CSSC Saisiyi’s diesel‑electric propulsion systems continue to see a steady increase in overseas contract awards, and its international business footprint is advancing steadily.

S-Shaft Shaft-Driven Power Generation System
Comprehensive coverage across multiple vessel types, maintaining a leading position in both newbuild and retrofit markets.

The global shipping industry is accelerating its low-carbon transition, with the dual regulatory frameworks of CII and EEXI imposing both constraints and creating new opportunities. In 2017, CSSC Saisiyi officially entered the shaft‑generator market, initiating the industrial-scale deployment and market rollout of shaft‑generator systems while balancing compliance requirements with shipowners’ investment returns.

Leveraging continuous technological advancements and an increasingly mature marine battery system, CSSC Saisiyi has innovatively integrated a lithium‑battery subsystem into its shaft‑generator power‑generation system. This approach addresses the demands of rapid power transients in complex ship operating conditions, further optimizes fuel consumption, and enhances operational safety. The resulting “Battery+” solution has consistently delivered outstanding results across diverse applications. From the first domestically developed hybrid‑propulsion system to be exported, to its installation on mainstream commercial vessels serving the flagship routes of the global shipping giant CMA CGM, the “shaft‑generator + battery” hybrid propulsion system has undergone rigorous real‑world testing in multiple scenarios and projects. Its performance and quality have earned broad market recognition, with cumulative deliveries now exceeding 110,000 kWh of stored energy.

The ship retrofit business is growing steadily in tandem. CSSC Saisiyi boasts exceptional end-to-end capabilities in shaft‑generator installation and modification, achieving a fully integrated, closed-loop process under an EPC general contracting model. With its three key strengths—cost‑effectiveness, regulatory compliance, and professional expertise—the company has earned strong recognition from shipowners. To date, CSSC Saisiyi has accumulated experience in retrofitting more than thirty vessels, including the “Yuedian 53,” “KANARIS,” “MOUNT HERMON,” and “ANDREAS K,” serving clients across China, Singapore, Greece, Cyprus, and other regions, and fostering a virtuous cycle of “delivery‑driven accumulation → reputation building → new contract growth.”

To date, the number of vessels equipped with shaft‑line generator systems has reached 583, with a combined shaft‑generator capacity of 475 MW. These systems are widely deployed across mainstream vessel types, including container ships, bulk carriers, chemical tankers, and Ro‑Ro vessels, maintaining a leading position in both the domestic new‑build and ship‑conversion markets as well as in overseas markets. The company has cultivated extensive partnerships with globally renowned shipowners and shipyards, earning a strong reputation in the industry.

S-Renewable New Energy Power System
Covering all waterways from inland rivers to coastal areas, establishing benchmark standards across multiple industries.

Starting with hybrid propulsion systems and progressing to all‑electric powertrains; from pod‑type batteries to containerized battery packs; and moving from battery system integration to in‑house R&D and production of complete battery systems, CSSC Saisiyi has forged a solid and resilient path in the field of electric vessels. To date, the company has delivered 271 vessels equipped with new‑energy propulsion systems, with cumulative battery capacity exceeding 600,000 kWh. With 202 ships already commissioned, CSSC Saisiyi has established replicable, scalable benchmark projects across key segments, including passenger ferries, cargo vessels, harbor tugs, and government‑service craft.

CSSI actively responds to the government’s call and promotes the green upgrading of water‑transport equipment across provinces and municipalities. In the cruise‑ship market, CSSI’s electric sightseeing‑boat projects have been successfully implemented on the Yangtze River, the Pearl River, the Min River, in highland lakes, and along coastal waters. Water‑tourism passenger vessels in 19 provinces and municipalities nationwide are now equipped with CSSI battery‑powered systems, delivering a green, quiet, and comfortable onboard experience for passengers.

In the electric cargo‑ship market, the first batch of electric cargo‑ship projects has been successfully launched in Jiangsu, Fujian, Anhui, and Zhejiang, progressively expanding application scenarios from inland waterways to coastal and offshore operations across all dimensions. Saisiyi’s new‑energy propulsion systems have also been deployed on numerous overseas vessels, steadily enhancing the company’s international market presence. To date, the electric cargo‑ship segment has cumulatively delivered approximately 220,000 kWh of electricity.

The company has achieved remarkable results in sectors such as port tugs and government vessels, delivering multiple industry-first projects nationwide. After rigorous testing under demanding operating conditions—including high-frequency port operations and nearshore patrols—CSSI’s power systems have demonstrated stable and reliable performance.

From the “Hundred‑Ship Roadmap” to the “Thousand‑Ship Initiative,” CSSC Saisiyi has consistently placed core technological R&D, high‑end equipment manufacturing, and vertical system integration at the heart of its strategy. In the marine propulsion sector, it has continuously broken new ground and deepened its expertise, leveraging three flagship system solutions—diesel‑electric propulsion, shaft‑generator systems, and new‑energy powertrains—to deliver numerous benchmark projects in both domestic and international markets. With these offerings, it has enabled the deployment of its technologies on 152 vessels across overseas regions, demonstrating through concrete achievements its responsibility and commitment as a global leader in marine electrification innovation—and providing dependable power for every voyage.

With a thousand vessels racing against the waves, staying true to our original aspirations, we ride the wind and break the waves to create new splendor. The first “Thousand‑Ship Initiative” marked the beginning of CSSI’s journey toward becoming a global leader in marine electrification innovation. As this inaugural program draws to a successful close, CSSI officially launches the “Three‑Thousand‑Ship Plan,” setting its sights on the ambitious goal of powering three thousand ships. Looking ahead, CSSI will remain at the forefront of industry trends and responsive to the evolving needs of our customers, relentlessly innovating to drive the global transition to green shipping.