VIGIL CONSILIUM
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Equipment Catalogue · Shared across conflicts

Hai Kun-class submarine (Indigenous Defence Submarine)

Force Atlas / Equipment / Hai Kun-class submarine (Indigenous Defence Submarine)

Recognition context, not a stat sheet. The catalogue covers major publicly documented systems relevant to the conflicts Vigil covers — not an exhaustive order of battle. No quantities, availability or current allocations are recorded. See the methodology.
Naval vessel

Hai Kun-class submarine (Indigenous Defence Submarine)

Taiwan's indigenous submarine programme — an unusually ambitious industrial undertaking whose strategic value is genuinely disputed among analysts.

Prototype · not conflict-verifiedEvidence: Unverified
Silhouette · not to scale

Record

FamilyHai Kun
VariantsIDS; Narwhal
OriginTaiwan
ManufacturerCSBC Corporation
EraProgramme launched 2016; prototype launched 2023 and undergoing sea trials through 2026.
Appears inTaiwan Strait

Conflict relevance

This is the catalogue's single record for this system. It is relevant to the module below; each module's Force Atlas shows how it is used there.

Taiwan Strait · Force Atlas

Operators

Taiwan (Republic of China) · Prospective operator

Taiwan (Republic of China): Prototype in sea trials; not an in-service capability

Battlefield role

Intended for sea denial in the waters and approaches around Taiwan.

Strengths

Submarines are among the hardest platforms to find and neutralise, and building them domestically after decades of being unable to buy them is a substantial industrial achievement with real deterrent signalling value.

Limitations

The programme is slow, expensive and unproven: the prototype has been conducting sea trials rather than entering service, and schedules have moved repeatedly. Critics within the asymmetric-defence school argue the cost would buy far more denial capability in missiles, mines and small craft. Vigil records the trials as reported milestones and makes no claim about capability, timeline or fleet size.

Branch & service operators

PartialConfidence: lowStatus as of 2026-07Reviewed 2026-07-20Sources: Taiwan Ministry of National Defense — activity reporting · Reuters — Taiwan and China coverage · IISS Military BalanceMethodology