Product profile
Lightfish
Lightfish is Seasats' compact long-endurance autonomous surface vessel for maritime intelligence, survey, science and security missions. It combines solar-...
Facts
- Company
- Seasats
- Product type
- usv
- Status
- commercial
- Primary capability
- Persistent maritime intelligence and survey
- Website
- https://www.seasats.com/
About Lightfish
Lightfish is a compact solar-electric autonomous surface vessel designed for deployments reaching six months and 8,000 nautical miles. A hybrid reserve system maintains propulsion during extended low-sun conditions, while the self-righting hull operates in seas reaching state six.
Collision avoidance, GPS-denied navigation and redundant communications support remote maritime operations. Modular payloads attach through standard mechanical and electrical interfaces for intelligence, survey, science and security missions. The vessel is portable enough for hand launch and can be operated in distributed fleets.
Market context
usv, persistent_maritime_sensing, commercial_and_operational, marine_surface, 2026-08-21, Autonomous Surface Vessel, marine_surface, uncrewed_surface_vessel, marine_surface, controlled_category_mapping_2026-08-21, false
Summary
Type: Autonomous surface vessel
Core: Six-month endurance design
Function: Persistent maritime sensing
Audience: Mission operators
Specifications
- battery_capacity_kwh
- 4 kWh kWh
- deployment
- 1–2 person manual deployment
- draft_m
- 0.79 m m
- endurance_months
- Up to 6 months months
- length_m
- 3.5 m m
- max_endurance
- 6 months
- max_range
- 8000 nautical miles
- max_range_no_solar
- 575+ NM
- max_speed
- 5 knots
- operating_sea_state
- Fully self-righting; operational to Beaufort 6+ Beaufort
- payload_capacity_kg
- 29.94 kg
- payload_connections
- Four ports supporting RS232, RS485 and Ethernet ports
- sea_state
- sea state 6
- solar_capacity_w
- 415 W nominal W
- standard_sensors
- 5 HD cameras; GNSS/GPS; IMU; compass; 2D LiDAR; AIS send/receive
- top_speed_mps
- 2.57 m/s
- weight_kg
- 138.35 kg
- width_m
- 1 m m
Operations
- Environment
- open ocean, coastal waters, ports, contested maritime environments
- Primary user
- naval operators, maritime-security teams, survey teams, ocean researchers
- Role
- maritime domain awareness, ISR, hydrographic survey, environmental monitoring
- Interaction model
- remote-supervised autonomy, fleet networking, modular payload integration
- Product detail
- usv, persistent_maritime_sensing, commercial_and_operational, marine_surface, 2026-08-21, Autonomous Surface Vessel, marine_surface, uncrewed_surface_vessel, marine_surface, controlled_category_mapping_2026-08-21, false
Research, Articles and recent verified events
- Seasats Lightfish completes autonomous Taiwan Strait transit — 2026-05-27
- Seasats Quickfish USV completes continuous eight-day sea trial — 2026-03-17
- RS Aqua and Seasats announce strategic partnership for the UK and Ireland defence market — 2026-03-03
- Seasats raises $20M Series A to scale production of small uncrewed surface vehicles — 2026-02-17
- Seasats awarded $24M APFIT funding to accelerate fielding of autonomous surface vessels — 2026-01-15
- Seasats and Elysium EPL sign reseller agreement for autonomous surface vessels in Australia and New Zealand — 2025-11-12
- Seasats unveils Quickfish, a high-speed long-endurance autonomous surface vessel — 2025-10-20
- Seasats awarded $89M U.S. Navy SBIR Phase 3 IDIQ contract — 2025-10-07