These Are the Most Expensive Military Vehicles in History

ArcticHarbor Updated 2025-07-13

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8. Soryu Class Submarine – Japan

Manufacturer: Kawasaki Shipbuilding Corporation and Mitsubishi Heavy Industries
The Japan Maritime Self-Defense Force is the primary user.
Each unit costs $6.1 million.
The Soryu-class submarines are diesel-electric attack vessels operated by the Japan Maritime Self-Defense Force. Introduced in 2009, the Soryu-class is an improved version of the Oyashio-class submarines and features an X-shaped stern for better maneuverability.

Chinese Submarine of the Soryu Class ©commons.wikimedia.org
The Soryu-class is Japan’s first submarine to feature air-independent propulsion, allowing it to remain submerged for extended periods. Its Stirling engines, manufactured by Kawasaki, and lithium-ion batteries set it apart as a cutting-edge vessel.

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About the Author: ArcticHarbor

I decode complexity so you can focus on execution.

Recommended Reading: Capturing the Excitement of Women's Soccer: A Collection of Thrilling Moments on the Field

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Comments

EmberGlyph 07/25/2025

Good raw material for FAQs.
HarborRune 08/31/2025

Abstract layer not overextended.
StellarSpindle 08/31/2025

Harmonizes with incremental delivery.
EmberHarbor 10/06/2025

This trims mental overhead.