Shipbuilding and dry-dock capacity

Shipbuilding and dry-dock capacity are strategic industrial capabilities supporting commercial logistics, naval readiness, sealift and wartime replacement. Governments shape them through procurement, subsidy, finance, cabotage, trade measures, workforce policy and public infrastructure. Capacity is a stack of designs, yards, docks, labour, suppliers and certification. It cannot be reduced to a single country league table.

Capacity and comparable metrics

Construction capacity includes design, steel preparation, fabrication, block assembly, outfitting, testing and delivery. Repair capacity covers inspection, maintenance, overhaul and restoration. Dry-dock capacity is the physical and scheduled ability to dock a vessel of specified dimensions and displacement. A yard, building berth, floating dock, repair slot and skilled workforce are different constraints.

Commercial statistics also use different denominators. Gross tonnage measures enclosed volume. Deadweight tonnage measures carrying capacity. Compensated gross tonnage adjusts tonnage to approximate differences in shipbuilding work content. Vessel counts ignore size and complexity. Deliveries describe completed output, while an orderbook records contracted future work. Comparisons must preserve vessel type, unit, reference year and delivery status.

Commercial and naval capacity overlap but are not freely interchangeable. Naval work can require different designs, security controls, standards, weapons integration, suppliers and workforces. A commercial yard's scale may support skills and components without proving that it can immediately build a specified warship. Naval construction can likewise fail to provide economical merchant-vessel output.

Industrial concentration and state policy

UN Trade and Development and Organisation for Economic Co-operation and Development reporting show that commercial shipbuilding is concentrated in China, the Republic of Korea and Japan. Country shares vary by deliveries, orderbooks, ownership of orders and the chosen tonnage measure. The concentration creates supply and resilience questions, but market share does not prove state control of every yard or the military availability of commercial output.

The OECD has documented subsidy, finance and policy channels affecting shipbuilding competition. Its 2026 analysis uses compensated gross tonnage to compare 2025 delivery and orderbook trends. Those findings should not be merged with vessel counts or naval tonnage. Claims that one country possesses hundreds of times another's capacity are unusable unless both numerator and denominator apply the same unit, ship classes, year and method.

States preserve or expand capacity through naval procurement, domestic-trade preferences, state-backed finance, infrastructure grants and workforce programmes. These tools pursue employment, supply security, naval readiness and commercial competitiveness in different proportions. Announced spending and desired fleet numbers remain separate from funded orders, contracts, delivered hulls and operational availability.

United States construction and repair

The Maritime Administration's 2025 facilities survey provides facility-level information on United States shipbuilding and repair. Survey coverage does not establish effective capacity for every ship type. Dock dimensions, certification, workload, workforce and supplier availability determine whether a listed facility can perform a given task.

Government Accountability Office reporting in 2025 identified persistent schedule, cost, design, quality, workforce and industrial-base problems in United States Navy shipbuilding. These are production and oversight findings, not a direct comparison with Chinese commercial deliveries. Congressional Research Service work likewise distinguishes naval and commercial sectors and the opportunities and limits of policy aimed at domestic supply chains.

Section 301 maritime action

In January 2025 the Office of the United States Trade Representative issued findings under section 301 that China had targeted the maritime, logistics and shipbuilding sectors for dominance. These are official United States findings and should be attributed as such rather than presented as neutral fact. USTR announced responsive action in April 2025.

The operative published status changed later. A November 2025 notice suspended the section 301 action for one year beginning 10 November 2025. As at 29 July 2026, the suspension remained in effect, subject to subsequent modification. Public copy must recheck the status at release.

The policy's effect requires evidence about orders, port calls, freight rates, yard investment, production, substitution and incidence. A trade measure may support domestic capacity, shift orders to allied yards, raise carrier costs or alter routes. It does not itself create docks, skilled labour or naval availability.

Strategic effect

Construction and repair shape economic endurance over long periods. Their value depends on delivery and repair throughput, ship type, fleet demand and access to propulsion, electronics, steel and classification. Denial of docking, classification or repair services can restrict fleet availability, but the effect depends on alternate facilities, flag and ownership changes, maintenance practices and enforcement reach.

See also

Port terminal operating systems and foreign operator control · Maritime insurance denial (P&I withdrawal) · Supply-chain resilience · Naval blockade

Sources

1. United Nations Conference on Trade and Development, Review of Maritime Transport 2024 (2024).
2. Organisation for Economic Co-operation and Development, "Shipbuilding".
3. Organisation for Economic Co-operation and Development, "Shipbuilding Economies under Pressure as China Reshapes Global Competition", 8 June 2026.
4. Organisation for Economic Co-operation and Development, An Analysis of Market-Distorting Factors in Shipbuilding (2019).
5. Organisation for Economic Co-operation and Development, Report on China's Shipbuilding Industry and Policies Affecting It (2021).
6. Office of the United States Trade Representative, Report on China's Targeting of the Maritime, Logistics, and Shipbuilding Sectors for Dominance, 16 January 2025.
7. Office of the United States Trade Representative, "USTR Section 301 Action on China's Targeting of the Maritime, Logistics, and Shipbuilding Sectors for Dominance", 17 April 2025.
8. Office of the United States Trade Representative, Notice of Modification to Suspend Action for One Year, 13 November 2025.
9. United States Maritime Administration, Report on Survey of U.S. Shipbuilding and Repair Facilities (2025).
10. United States Government Accountability Office, Navy Shipbuilding: Persistent Challenges Require New Approaches, GAO-25-108136, 11 March 2025.
11. United States Government Accountability Office, Navy Shipbuilding: Increasing Focus on Quality Needed to Improve New Ship Construction, GAO-25-106286 (2025).
12. Ronald O'Rourke, The State of U.S. Shipbuilding, Congressional Research Service Report TE10110, 11 March 2025.
13. John Frittelli, Shipbuilding to Improve Domestic Supply Chains: Opportunities and Challenges, Congressional Research Service Report IN12592, 6 August 2025.