Japan Engine Corporation

Business Details

A single-segment company centered on the manufacture and sale of marine internal combustion engines (main engines), with operations spanning repairs, parts sales, after-sales service, and licensing business. Its core product is the LSH series energy-efficient main engine, with Oshima Shipbuilding and Guangzhou Diesel Engine Factory among its major customers. As a global licensor with an integrated system covering development, design, manufacturing, sales, and after-sales service, the company is driving the expansion of the UE engine's global market share and the social implementation of next-generation decarbonized fuel engines.

Recent Overview

Net sales and profit set record highs for the third consecutive fiscal year, with the order backlog also growing to ¥34,454 million

In FY2026 (ending March 2026), net sales were ¥29,707 million (up 2.9% year on year), operating profit was ¥5,458 million (up 7.2%), ordinary profit was ¥6,433 million (up 18.7%), and net income was ¥4,758 million (up 10.0%), with all indicators setting record highs for the third consecutive fiscal year. Marine internal combustion engines saw a revenue decline to ¥14,170 million (down 15.6%) due to production load adjustments from next-generation engine manufacturing, but repairs and parts sales rose substantially to ¥15,536 million (up 28.6%), driving overall performance. Orders received grew to ¥36,804 million (up 24.0%) and the order backlog to ¥34,454 million (up 25.9%), and the company has already secured tentative production allocations for approximately the next three years. The first ammonia fuel engine unit completed the world's first delivery in October 2025, and the first hydrogen fuel engine unit began verification operation in March 2026. For FY2027 (ending March 2027), the company forecasts net sales of ¥32,700 million (up 10.1%), net income of ¥5,010 million (up 5.3%), and an annual dividend of ¥100 (up ¥12 year on year).

Key Products

Growth Drivers

• Continued high growth in repairs and parts sales: Sustained strong demand for after-sales service and expanded orders, manufacturing, and sales of UE engines by overseas licensees drove revenue growth of 28.6% year on year (¥15,536 million) in FY2026 (ending March 2026). This segment's share of sales rose to 52.3%, overtaking marine internal combustion engines and contributing to improved profitability
• Acceleration of global UE engine expansion: The leading Chinese licensee has completed construction of a new plant, with production volume gradually increasing. Sales to Guangzhou Diesel Engine Factory Co., Ltd. rose sharply to ¥4,294 million from ¥2,896 million in the prior period, making it the top customer
• First-mover advantage in next-generation decarbonized fuel engines: The world's first ammonia fuel engine unit has been completed and delivered. NEDO Green Innovation Fund subsidies (non-operating subsidy income of ¥1,012 million, extraordinary income of ¥690 million) boosted ordinary profit
• Substantial order backlog and government support in the shipbuilding industry: Backed by public-private investment and government support policies aimed at revitalizing and strengthening the shipbuilding industry, the company has already secured tentative production allocations for approximately the next three years. The order backlog remains at a high level of ¥34,454 million (up 25.9% year on year)
• Medium- to long-term production capacity expansion through new plant construction: A new plant scheduled to begin operation in FY2028 is planned to further increase production and sales volumes of main engines. Combined with the new development of the 60LSH engine (heavy fuel oil) and the 60LSJA engine (ammonia), the company is strengthening its response to the volume zone of the vessel market

Risks

• Increased R&D and SG&A expenses associated with next-generation fuel engine development: Selling, general and administrative expenses rose substantially to ¥4,288 million (from ¥3,135 million in the prior period) as upfront investment for the development and manufacturing of ammonia and hydrogen fuel engines. In FY2027 (ending March 2027), the company plans to continue simultaneous development of decarbonized, low-carbon, and heavy fuel oil engines
• Risk of production load adjustment for marine internal combustion engines: As part of the production line has been allocated to next-generation engine manufacturing and demonstration operation, sales of marine internal combustion engines declined to ¥14,170 million (down 15.6% year on year) in FY2026 (ending March 2026). This is expected to gradually resolve after the completion and delivery of the first hydrogen fuel engine unit within FY2026, but delay risk remains
• Geopolitical risk and instability in shipping market conditions: Global supply chain disruptions and changes in trade patterns stemming from Middle East conditions, US security policy, and trade policy affect shipping market conditions. There remains uncertainty difficult to incorporate into earnings forecasts regarding rising procurement costs and tightening procurement conditions for crude oil and crude oil-derived raw materials and products
• Customer concentration risk: In FY2026 (ending March 2026), the two major customers, Guangzhou Diesel Engine Factory Co., Ltd. (¥4,294 million) and Oshima Shipbuilding (¥4,145 million), accounted for 28.5% of net sales. The high degree of dependence on specific customers and regions means changes in customer ordering trends directly affect performance
• Foreign exchange and cost-push risk: Interest expenses increased to ¥39 million (from ¥23 million in the prior period), and foreign exchange losses increased to ¥16 million (from ¥3 million). Price pass-through negotiations to offset cost-push pressures are necessary, and there is a risk of profit pressure if such negotiations are unsuccessful
• Impact on profit from changes in accounting estimates: The useful life of fixed assets was shortened due to construction work related to a change in the grand design of the head office plant, including construction of a new ammonia fuel engine plant. Operating profit, ordinary profit, and net income before income taxes for the fiscal year each decreased by ¥91 million, and additional impacts may occur in the future