Strategic NewsChina’s New Trimaran Submarine: 16 Missiles And An Unconventional Design
Toward Decline

China’s New Trimaran Submarine: 16 Missiles And An Unconventional Design

Naval News Institutional·2026-10-28PLAP6: Defence SurgeP7: Alliance Architecture
Why it matters

China's serial production of multiple submarine classes, including an unconventional trimaran design with extended missile payload, represents a material expansion of PLA underwater strike capacity in the Indo-Pacific. This directly threatens Australian maritime defence posture and raises the credible coercive/kinetic capability available to Beijing in a Taiwan contingency, which would draw Australia into an alliance test and degrade the regional balance on which Australian security depends.

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Where this sits in the model

This development bears on 2 of the eight pillars of Australian preparedness — the overall picture right now is 5/100.

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How does the military balance actually stack up?

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