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Overview
Lockheed Martin (NYSE: LMT) unveiled the Lamprey MMAUV (Multi-Mission Autonomous Underwater Vehicle) in February 2026 — an internally funded program completed in just 14 months. The Lamprey’s defining characteristic is hull attachment: it magnetically or mechanically attaches to the hull of surface ships or submarines to hitch a ride to its operating area, arriving with a full battery charge. This “parasite transit” approach fundamentally changes the range equation for a battery-electric AUV.
Specifications
| Spec | Value |
|---|---|
| Length | 24 feet (payload bay); variants planned from 20–35 feet |
| Payload bay | 24-foot modular bay |
| Power | Hydrogen fuel + hydrogenerators recharging onboard batteries during transit |
| Transit method | Hull-attachment to surface ships or submarines |
| Development time | 14 months (internal funding) |
Key Capabilities
Hull attachment transit: Lamprey attaches to the hull of surface ships or submarines for transit to the operational area. During transit, onboard hydrogenerators recharge batteries from hydrogen fuel. The vehicle arrives in the area of operations with a full charge, effectively eliminating battery range as a transit constraint.
Multi-domain effects from undersea:
- From below the surface: launches antisubmarine torpedoes and decoys
- From surface: launches unmanned aerial vehicles (UAVs) for reconnaissance or kinetic strike
- Renderings show up to three retractable twin-tube launchers (six drones total)
Modularity: The 24-foot payload bay is reconfigurable across mission types — ISR, ASW, strike, EW — without hull changes.
Swarm operation: Designed for multi-vehicle coordinated operations via inter-vehicle communications.
Development
Lockheed Martin developed Lamprey using internal research and development (IRAD) funds without an initial government contract — a 14-month sprint from concept to unveiled hardware. This is notable for a defense prime, which typically waits for funded government programs before hardware development. The fast internal development suggests Lockheed is competing for future XLUUV or multi-mission AUV programs against Anduril’s Dive-XL.
Variants between 20 and 35 feet are already planned, implying a scalable hull family rather than a single-size platform.
Strategic Context
Lamprey directly competes with Anduril’s Dive-XL for US Navy XLUUV-class programs. The hull-attachment transit is a different solution to the same range problem that Dive-XL addresses with higher energy density (larger battery volume). Lamprey’s hydrogen power gives it an energy-independent transit capability; Dive-XL depends on battery density and its own propulsion for the full transit.
The multi-domain capability (launching both torpedoes and aerial drones from undersea) positions Lamprey as a true effects platform rather than a pure sensor vehicle.