UEI HEL6EFFCS3U8CAGE 862G1NAICS 334511Export: EAR99
Capability statement (PDF)
Intellectual property

The patents behind sailboats that can hide

Our IP covers what makes HORUS and HERMES work: the submerged sailing hull, the buoyancy engine that dives and holds depth, passive automatic wingsail control, multi-hull self-righting, and mapping underwater currents. Patents are granted in the U.S., Europe and Australia.

Issued
15
Pending
5
First issued
July 2018
Latest issued
September 2026

Five technology families

1

Buoyancy engine

Changes the vessel’s buoyancy to dive, surface and hold a set depth.

1 pending

Mapping underwater currents

Maps underwater currents from how the vehicles drift.

4

Multi-hull self-righting

Rights and recovers a vessel at sea, and reduces heeling moment.

5

Passive, automatic wingsail control

Sets the wing to the wind with no lines or pulleys, including a wingsail that doubles as a solar array.

5

Submerged sailing vessel

A sailing hull that rides below the waterline and submerges on command.

Counts include the 11 issued U.S. patents and 4 patents granted in Europe and Australia, listed below. Mapping underwater currents has 1 patent pending.

Issued U.S. patents

PatentTitleFamilyIssuedLink
12,741,728Submerged sailing vesselSubmerged sailing vesselSep 22, 2026View →
12,466,529Apparatus and method for depth control of submersible vesselsBuoyancy engineNov 11, 2025View →
12,065,222Method, apparatus and system for recovering a sailing vesselMulti-hull self-rightingAug 20, 2024View →
12,024,274Submerged sailing vesselSubmerged sailing vesselJul 2, 2024View →
11,827,312Method and apparatus for reducing a heeling moment of a sailing vesselMulti-hull self-rightingNov 28, 2023View →
11,673,641Submerged sailing vesselSubmerged sailing vesselJun 13, 2023View →
11,180,232Submerged sailing vesselSubmerged sailing vesselNov 23, 2021View →
10,625,841Passive, automatic wing control mechanism for vesselPassive, automatic wingsail controlApr 21, 2020View →
10,526,096Solar wing system and apparatusPassive, automatic wingsail controlJan 7, 2020View →
10,399,652Automatic wing control for sailing vesselsPassive, automatic wingsail controlSep 3, 2019View →
10,029,773Submerged sailing vesselSubmerged sailing vesselJul 24, 2018View →

International patents

PatentTitleFamilyGrantedCoverage
AU 2021410773Method, apparatus and system for recovering a sailing vesselMulti-hull self-rightingDec 11, 2025Australia
EP 4281839Method, apparatus and system for recovering a sailing vesselMulti-hull self-rightingNov 25, 2025Europe: Unitary Patent, Spain, UK
EP 3707071Passive, automatic wing control mechanism for vesselsPassive, automatic wingsail controlJan 10, 2024Europe: 18 countries
AU 2018365074Passive, automatic wing control mechanism for vesselsPassive, automatic wingsail controlNov 9, 2023Australia

Together with the 11 U.S. patents above, these make up our 15 issued patents.

Pending

US 2025/0289546 · published Sept 2025
System, method and apparatus for controlling speed of a sailing vessel
Four further U.S. applications are pending, including new filings in the buoyancy engine and self-righting families.

Partnerships & licensing

We’re actively looking for channel partners, in the U.S. and internationally, to bring HORUS to new customers and regions. We will also consider licensing our technology.

Become a partner
Changing the Math with the Small, the Agile, the Many, the Invisible, the Attritable.
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3520 Kurtz St, Suite C
San Diego, CA 92110
© 2026 SubSeaSail®, Inc. HORUS™ and HERMES™ are trademarks of SubSeaSail, Inc.Mailing address · 3520 Kurtz St, Suite C, San Diego, CA 92110Privacy policy