VIGIL CONSILIUM
Context, not headlines
PUBLIC ALPHAEvolving coverage — see the methodology and the corrections log.
Equipment Catalogue · Shared across conflicts

Harpoon coastal defence system

Force Atlas / Equipment / Harpoon coastal defence system

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.
Missile / precision strike

Harpoon coastal defence system

A large US coastal-defence missile order that became the test case for whether American arms actually arrive on schedule — the supply-chain question at the centre of the alliance-credibility file.

DeliveredEvidence: Reported
Silhouette · not to scale

Record

FamilyHarpoon
VariantsRGM-84L-4 Harpoon Block II; Harpoon Coastal Defense System
OriginUnited States
ManufacturerBoeing
EraLong-established design; Taiwan's large coastal-defence order placed in 2020.
Appears inTaiwan Strait · global service

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) · Primary operatorUnited States and the Taiwan Strait · Donor

United States and the Taiwan Strait: Supplied through Taiwan Relations Act arms sales

Battlefield role

Ground-launched anti-ship strike, complementing indigenous Hsiung Feng systems in a sea-denial concept.

Strengths

A mature and widely operated system, purchased in quantity, and precisely the asymmetric capability class US advisers have urged Taiwan to prioritise.

Limitations

Delivery timelines have been the persistent issue. The order forms part of a substantial and publicly discussed backlog of US arms sales to Taiwan, and 2026's slowdown in transfers has made the gap between contracted and delivered capability a central analytical question. Vigil records the existence of the backlog and does not attempt to quantify delivery status, which is not reliably public.

Branch & service operators

PartialConfidence: moderateStatus as of 2026-07Reviewed 2026-07-20Sources: Congressional Research Service — Taiwan reports · Reuters — Taiwan and China coverage · Global Taiwan Institute — Taiwan policy analysisMethodology