UEI HEL6EFFCS3U8CAGE 862G1NAICS 334511Export: EAR99
Capability statement (PDF)
HORUS now accepting orders

Persistent, low-signature maritime ISR at attritable cost.

HORUS is a wind- and solar-powered autonomous underwater & surface vehicle (AUSV) that stays on station for months without refueling, dives to 100 m to avoid weather and detection, and reports what it hears.

HORUS on station at sea while a U.S. Navy helicopter works overhead
HORUS with a U.S. Navy helicopter during MCM operations at ANTX 2025
1–6+ mo
on station, wind and solar only
100 m
dive depth; up to 10 days submerged, depending on usage
35+ kn
gusts survived in weeks-long sea trials
How it operates

Sail, dive, listen, report. For months.

  1. 01

    Sail on wind

    A patented, servo-set wingsail drives the hull at 0.5–3 kn with no lines or pulleys. A thruster handles launch, recovery and calm.

  2. 02

    Dive on command

    Submerges to 100 m and drifts for up to 10 days, depending on usage, out of the storm and out of sight.

  3. 03

    Listen quietly

    With the hull below the waterline, the platform is nearly silent, so its hydrophones hear the water, not themselves.

  4. 04

    Report what matters

    Edge AI sends exceptions, not raw data, over satellite, LTE or mesh radio to a web GUI with an API.

Platforms

Two vehicles, one architecture

HORUS rendering showing the hull and keel below the waterline

HORUSTM

TRL 7–8 · Accepting orders

Semi-submersible ISR and sensing vessel. The hull rides below the waterline and the wingsail above; edge AI turns sensor data into exception-based reports.

Endurance1–6+ months on station
Depth100 m; up to 10 days submerged, depending on usage
Speed0.5–3 kn sailing · 4–6 kn sailing with thruster
Power1,250 Wh LiFePO4 · 100–130 W solar wing
Payload power150 W peak · 20–25 W average
CommsSATCOM · LTE · mesh radio (Doodle, Silvus)
Full HORUS specifications
Missions

Built for the missions that need persistence

Field record

In the water with the Navy since 2019

Play: HORUS sailing at SubSeaSail headquarters, April 2026Watch: HORUS sailing (2 min)
  1. 2026 · U.S. Navy
    ANTX-Coastal Trident 26
    HORUS deployment, Port Hueneme to San Nicolas Island.
  2. 2025 · U.S. Navy
    ANTX-Coastal Trident 25
    HORUS on station during an MCM exercise with a Navy helicopter.
  3. 2024 · U.S. Navy
    FATHOMWERX + ANTX 2024
    Full-size HORUS on display; HERMES self-righting in the test tank.
  4. 2022 · NUWC Newport
    Northeast Tech Bridge USV experiment
    HORUS in a hosted uncrewed surface vessel experiment.
  5. 2019 · U.S. Navy
    ANTX Gulfport
    First public demonstration of HORUS submerging.
Government contracting

Put HORUS on contract

Small business, registered in SAM.gov. HORUS and HERMES are EAR99. Buy outright, lease operations, or buy the data as a service.

UEI
HEL6EFFCS3U8
CAGE
862G1
Primary NAICS
334511 · 336611 · 336612 · 541330
Export
EAR99
Worked with
DIU · DOE · NSF · NUWC Newport · U.S. Navy
Contract awards
DIU · National Security Innovation Capital, HORUS production readiness (2024)DOE · SBIR Phase I, marine energy environmental monitoring (2021)DOE · SBIR Phase IINSF · SBIR Phase I, Hermetic, Expeditionary Sailing Vessel (2022)
High-visibility orange HORUS near an offshore platform
Commercial & energy

The same platform, configured for offshore safety

A high-visibility HORUS with AIS, LED nav lights and collision-avoidance microphones, built for operators who need eyes and ears around their assets.

  • 500 m rig safety-zone patrol
  • Data as a service, leased operations, or purchase
  • Marine mammal PAM before and during seismic surveys
  • Subsea data harvesting from seabed ADCPs and tie-backs
Offshore energy solutions →
The SubSeaSail team outside the San Diego workshop
Team

Designed, built and tested in San Diego

Engineers, operators and program leads who take HORUS from the workshop on Kurtz Street to Navy exercises at sea.

Meet the team
Contact

Tell us about your mission

Demonstrations, pilots, payload integration or contracting. Your message goes straight to our leadership team.

Mailing address
3212 James St
San Diego, CA 92106
Workshop
3520 Kurtz St, Suite C
San Diego, CA 92110

Get in touch

Tell us about your mission, a demonstration, partnership or contracting question. Email reaches our leadership team directly.

Email info@subseasail.com

Or call +1 (619) 253-8761