The World's Largest Drydocks — and the Shipyards That Own Them
TrustedDocks tracks 1,094 graving, dry and floating docks between 100 and 1,000 metres across the world's repair and construction yards — including 251 graving/dry docks of 300 metres or more. This is the top of that list.
The 300-metre club
A dock longer than 300 metres can take any vessel afloat — ULCVs, VLCCs, the largest cruise ships. Only 251 graving and dry docks worldwide clear that bar, and they are concentrated in a handful of countries: China, South Korea, Japan and a few strategic outliers in Europe, India and Southeast Asia. For owners, that list is the market for big-ship drydocking; for yards, membership is a moat.
The largest graving & dry docks in the world
| # | Shipyard | Country | Length | Width |
|---|---|---|---|---|
| 1 | CSBC Shipyard | Taiwan | 950 m | 92 m |
| 2 | HD HYUNDAI HEAVY INDUSTRIES - GUNSAN SHIPYARD | South Korea | 700 m | 115 m |
| 3 | DALIAN COSCO KHI SHIP ENGINEERING CO LTD (DACKS) | China | 700 m | 80 m |
| 4 | PIPAVAV DEFENCE AND OFFSHORE ENGINEERING COMPANY LTD. | India | 661 m | 65 m |
| 5 | HD Hyundai Heavy Industries Co., Ltd. (Ulsan Shipyard) | South Korea | 640 m | 92 m |
| 6 | Samsung Heavy Industries Co., Ltd. (Geoje Shipyard) | South Korea | 640 m | 97 m |
| 7 | Jiangsu New Era Shipbuilding Co | China | 588 m | 106 m |
| 8 | Shanghai Waigaoqiao Shipbuilding Co., Ltd - CSSC | China | 580 m | 120 m |
| 9 | Jiangnan Shipyard - CSSC | China | 580 m | 120 m |
| 10 | SHANGHAI JIANGNAN CHANGXING HEAVY INDUSTRY CO LTD (SCH) | China | 580 m | 120 m |
| 11 | HARLAND & WOLFF HEAVY INDUSTRIES LIMITED | United Kingdom | 556 m | 93 m |
| 12 | Agila Subic Shipyard (formerly Hanjin) | Philippines | 550 m | 135 m |
| 13 | SEATRIUM SHIPYARD SUBIC | Philippines | 550 m | 65 m |
| 14 | Dalian Shipbuilding Industry Co Ltd (CSSC DSIC) | China | 550 m | 58 m |
Source: TrustedDocks facilities database, August 2026. Lengths are for the dock chamber; floating docks are excluded from this table.
What stands out
The biggest dock in the world is in Kaohsiung. CSBC's 950 × 92 m graving dock — built in the supertanker era for 1-million-DWT ambitions — remains unmatched half a century later.
Korea's giants were built for series production. The 640–700 m docks at HD Hyundai Ulsan and Gunsan and Samsung Geoje exist to assemble multiple hulls simultaneously; they double as the largest repair-capable chambers in North Asia.
China dominates by depth of list, not just size. Beyond the 580 × 120 m chambers at Waigaoqiao and Jiangnan, China holds the largest share of the 300-metre club — one reason the Ship Repair Index shows Chinese yards running a third above their 2025 baseline while every other region softens.
Strategic outliers matter. Harland & Wolff's 556 × 93 m Belfast dock and Pipavav's 661 × 65 m chamber in India are their regions' only entries at this scale — scarce assets when a ULCV needs emergency docking outside East Asia.
Find the right dock for your vessel
Dock dimensions, cranage and services for every yard are on their TrustedDocks profiles — start from the global shipyard directory, filter by country, or jump straight to proven type specialists via pages like container ship yards in China or bulk carrier yards in China.