Goldman Sachs is positive on the progress of Japan's shipbuilding revitalization and maintains Buy ratings on Mitsui E&S and Namura Shipbuilding

Overview

This report summarizes Goldman Sachs' main observations after attending the SEA JAPAN international maritime industry exhibition from April 22 to 24, 2026. The report's core view is that initiatives to revitalize Japan's shipbuilding industry are progressing, including the introduction of specialized machinery led by welding equipment, capacity expansion, stronger industry collaboration, and development of alternative-fuel vessels. Goldman Sachs maintains Buy ratings on Namura Shipbuilding Co. and Mitsui E&S Co.

Core views

Goldman Sachs believes the practical path for expanding Japan's shipbuilding capacity first comes from existing shipyards replacing outdated equipment and saving labor, especially through automation in welding, cutting, painting, and other processes. Compared with peers in South Korea and China, Japanese shipyards generally have smaller single-yard footprints and higher material and labor costs, so improving international competitiveness requires stronger industry collaboration in areas such as LNG carriers, alternative-fuel vessel development, and design, while allowing each company to focus on the vessel types it does best. Although demand for environmentally friendly vessels has not clearly accelerated after the IMO postponed adoption of mid-term GHG measures, the industry decarbonization direction is still considered unchanged.

Analysis framework

The report combines exhibition research, observations from discussions with industry experts and companies, interpretation of policy goals, analysis of labor structure across the industry chain, and explanations of company valuation methods. At the industry level, it focuses on evaluating capacity expansion, automation, alternative-fuel vessels, and supply-chain policy support; at the company level, it provides 12-month target prices, valuation models, and key risks for Mitsui E&S and Namura Shipbuilding.

Methodology notes

• Valuation methodsSOTP

  Mitsui E&S Co. target price methodology

  Goldman Sachs uses a sum-of-the-parts model, applying target P/E multiples of 10x to 19x to net profit forecasts for each business segment, and discounts back to FY3/27 using a 9.8% cost of equity to derive a 12-month target price of ¥7,800.

• Valuation methodsP/B

  Namura Shipbuilding Co. target price methodology

  Goldman Sachs applies a target P/B multiple of 2.6x to its estimated FY3/30E ending book value per share, and discounts back to FY3/27E using a 9.8% cost of equity to derive a 12-month target price of ¥5,600.

• factor_modelGS Factor Profile

  Goldman Sachs factor profile

  GS Factor Profile compares stocks with the market and industry peers across growth, financial returns, valuation multiples, and a composite metric; the composite metric uses the average of percentile rankings for growth, financial returns, and inverse valuation multiples.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Mitsui E&S Co. (7003.T)

  Covered company; Buy rating maintained

  Strengths

  The company is one of Japan's manufacturers of propulsion main engines, and the marine propulsion systems segment uses a higher target P/E in the target price model; it benefits from the long-term logic of shipbuilding capacity expansion and demand for marine power systems.

  Weaknesses

  The company is currently focused on producing propulsion engines. Although it has a history of manufacturing auxiliary power-generation engines, the report believes the probability of near-term benefit from data center-related demand is low.

  Comparison

  Like Japan Engine Corporation, it is a Japanese company related to main engines; however, Japan Engine Corporation is not covered by Goldman Sachs.

  Risks

  Sharp increases in input costs, deterioration in container shipping demand, production issues, and price declines.

• Namura Shipbuilding Co. (7014.T)

  Covered company; Buy rating maintained

  Strengths

  As a Japanese shipbuilding-related company, it benefits from expectations for capacity expansion, automation adoption, and industry revitalization policy; the target price is ¥5,600.

  Weaknesses

  If shipbuilding capacity expands too quickly, supply-demand balance may weaken, and the company is sensitive to steel prices and ship prices.

  Comparison

  Compared with smaller shipyards, large shipbuilders are better positioned to introduce specialized machinery and advance labor-saving measures.

  Risks

  A sudden increase in shipbuilding industry capacity, rising steel prices, production issues, and falling ship prices.

• Japan shipbuilding industry

  Industry covered by the report

  Strengths

  Policy goals are clear, automation equipment and collaborative robots are beginning to be introduced, and the development direction for alternative-fuel vessels and LNG carriers is clear.

  Weaknesses

  Japanese shipyards typically have smaller single-yard footprints, and material and labor costs are higher than those of peers in South Korea and China.

  Comparison

  Compared with South Korea and China, Japan needs to improve competitiveness through specialization, industry collaboration, and a focus on advantaged vessel types.

  Risks

  Slower-than-expected acceleration in demand for environmentally friendly vessels, insufficient policy support, inadequate supplier subsidies, and persistent labor shortages.

Key data

• Exhibition dates2026-04-22 to 2026-04-24Goldman Sachs attended the SEA JAPAN international maritime industry exhibition.
• Japanese government shipbuilding targetRoughly double by 2035 versus 2024The report treats this target as an important policy backdrop for expanding domestic shipbuilding capacity.
• Number of skilled workers in Japan's shipbuilding industryAbout 60,000Of this, steel processing including welding and cutting accounts for about 50%-55%, outfitting and electrical about 20%-25%, painting about 20%, and interior work about 5%.
• Mitsui E&S Co. 12-month target price¥7,800Based on the SOTP model, with a cost of equity of 9.8%.
• Namura Shipbuilding Co. 12-month target price¥5,600Based on a target P/B of 2.6x and discounted using a 9.8% cost of equity.
• Goldman Sachs global equity coverage rating distributionBuy 50%, Hold 34%, Sell 16%As of April 1, 2026, Goldman Sachs Global Investment Research covered 3,074 stocks.

Impact & implications

If Japan's shipbuilding industry can continue introducing automation equipment and obtain supply-chain policy support, large shipbuilders may improve capacity and efficiency amid labor shortages. Alternative-fuel vessels, LNG carriers, and industry collaboration could help improve long-term competitiveness, but demand timing is still affected by IMO greenhouse gas policy, ship prices, steel prices, and the global shipping cycle. For individual stocks, the report more directly supports the Buy thesis for Namura Shipbuilding and Mitsui E&S, but remains cautious on near-term incremental benefits to Mitsui E&S from data center engine demand.

Risks

• Sharp rises in input costs or steel prices.
• A sudden increase in shipbuilding industry capacity leading to weaker supply-demand conditions.
• Production issues affecting deliveries and profitability.
• Declines in ship prices or related product prices.
• Deterioration in container shipping demand.
• After the postponement of the IMO's mid-term GHG measures, acceleration in demand for environmentally friendly vessels may be below expectations.

What to watch

• Follow-up Japanese government shipbuilding policies and subsidy arrangements for maritime parts suppliers.
• The speed of introducing automation equipment in domestic shipyards for welding, cutting, painting, and other processes.
• Whether large shipbuilders can use advantages in scale and workspace to advance labor-saving measures.
• Progress in LNG carrier and alternative-fuel vessel development.
• Changes in IMO greenhouse gas rules and their impact on environmentally friendly vessel orders.
• Whether data center engine demand spreads to Japanese engine manufacturers.