Factory/PlantOther manufacturing

Mitsubishi Shipbuilding to expand shipbuilding capacity at Choshu Dejima

Mitsubishi Heavy IndustriesShimonoseki, YamaguchiPublished Oct 3, 2026

Investment¥100B

PhasePlanned

Start—

Completion—

Mitsubishi Heavy Industries has acquired industrial development land at the Choshu Dejima artificial island in Shimonoseki, Yamaguchi, for Mitsubishi Shipbuilding to expand its shipbuilding capacity. The plan includes relocating some functions from the Shimonoseki Shipyard Eura Plant and building a new hull-block manufacturing plant; the project is expected to receive up to JPY 40 billion in government support.

Project facts

Owner: Mitsubishi Heavy Industries
Listing: 7011 Tokyo
Facility: Factory/Plant
Sector: Other manufacturing
Location: Shimonoseki, Yamaguchi, Japan
Investment: ¥100B — total project investment; up to JPY 40 billion government subsidy
Scale / capacity: expanded shipbuilding capacity
Announced: Oct 2, 2026
Themes: reshoring, defense

Figures and schedules are as announced by the company or the public body concerned; plans can change. Amounts that were not disclosed are recorded as not disclosed, never estimated.

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