Martlet (LMM)

Compact laser-guided missile developed by Thales UK for helicopters, fast jets, small boats and ground launchers, giving light platforms a precision strike capability against fast in-shore attack craft, light vehicles and drones. It arms Royal Navy Wildcat helicopters and has been supplied to Ukraine.

In service since 2021 · 2 operator countries

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02

km range

1.5

Mach

kg warhead

Procurement snapshot

Availability & export

UK export-licensed

Subject to UK SPIRE licensing (ECJU); generally available to allied states.

Channel: Government-to-government or direct

Fielded & proven

Limited · 2 operators

In service since 2021. Status: active.

Lifecycle cost (est.)

No public unit price to model from.

Interoperability

No standardised NATO calibre / datalink detected in public specs.

Derived guidance from public data — export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Full specifications

Performance

Speed, range, altitude and engagement capability.

Max speed (Mach) Maximum speed as a multiple of the speed of sound. Mach 2+ is typical for air-superiority fighters.: 1.5 Mach

Stronger than 41% of missiles
Range Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence.: 8 km

Stronger than 14% of missiles

Firepower

Armament, payload and guidance.

Warhead Warhead mass. Heavier generally means larger effect radius, at the cost of range.: 3 kg

Bottom 6% of missiles
Warhead type Blast-fragmentation, shaped charge (HEAT), penetrator, thermobaric or nuclear-capable.: Blast-fragmentation
Guidance How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire.: Semi-active laser homing

Physical

Dimensions, weight and crew.

Length Overall length including gun/probe where applicable.: 1.3 m
Combat weight Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor.: 13 kg

Propulsion

Engine, power and fuel.

Propulsion type Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet…: Solid-fuel rocket

Program

Cost, production scale and operators.

Operator countries Number of countries operating the system. More operators means broader support ecosystem.: 2

Stronger than 29% of missiles

Specifications compiled from public Thales Group and reference sources ↗. Published defense figures are approximations — treat comparisons as directional. Last verified 2026-07-02.

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