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Seasats
Techstars '21San Diego, US · Founded 2020 · 71 employees on LinkedIn · 12 known investors
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SeaSats develops autonomous maritime vessels ("Lightfish" and "Quickfish") for ocean surveillance, intelligence gathering, and domain awareness. The company serves defense, government, and maritime security customers requiring real-time monitoring of coastal and open ocean areas.
Also known as SeaSats
Founders & leadership
Seasats was founded in 2020 by Mike Flanigan.
Investors · 12
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
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How we know: Hemisphere Ventures LLC's portfolio page · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
How we know: a partner's Signal profile · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Monozukuri Ventures's portfolio page · a partner's Signal profile · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Red Beard Ventures's portfolio page · the VCSheet dataset · Not right? Tell us
How we know: Shield Capital's portfolio page · a partner's Signal profile · funding news · finance.yahoo.com · the VCSheet dataset · Not right? Tell us
How we know: the Techstars portfolio · funding news · finance.yahoo.com · open dataset · Top 3000 Accelerator Startups (no YC) 2026-08 · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: finance.yahoo.com · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: funding news · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
Funding
SEC filings, press & company announcements$40M disclosed across 2 of 4 rounds · 2025–2026
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Seasats designs and produces uncrewed surface vessels intended to operate as "satellites at sea," collecting maritime data for domain awareness, intelligence and surveillance, and subsea mapping. The company markets three platforms differentiated by endurance, speed and payload capacity: Lightfish, its flagship solar-electric vessel with hybrid reserve power rated for missions of up to six months and roughly 8,000 nautical miles; Quickfish, a faster tactical platform capable of 35+ knots with about one month of endurance and 450 lbs of payload; and Heavyfish, a larger long-range platform with 9,000 lbs displacement and 1,000 lbs payload capacity, listed with an expected launch in 2026.
The vessels are built around a modular payload system with a stated library of more than 50 payloads that can be swapped in minutes, and the company says customer-specific payloads can be integrated in hours or days. Described capabilities include collision avoidance, navigation under GPS denial, redundant satellite communications, self-righting hulls rated to sea state 6, real-time alerting to operators by phone or email, and integration with Group 1 and Group 2 uncrewed aerial systems that can be launched from the vessels. Lightfish is small enough to fit in a pickup truck or trailer, can be deployed by one or two people by hand, and is transportable by commercial or military aircraft; the company states operators require three to five days of training rather than specialist qualifications.
Application areas cited by the company span commercial, defense and scientific missions, including tracking of "ghost fleet" vessels, hurricane monitoring, detection of smuggling and illegal fishing, monitoring of harmful algal blooms, submarine signal detection, pipeline status inspection, hydrographic survey, and perimeter escort or interception around vessels and infrastructure using Quickfish.
Business model
Seasats sells autonomous surface vessels and associated modular payloads, and also offers data-as-a-service alongside vessel sales. The company emphasises affordability and production at scale, with immediate stock availability.
Vessel and payload sales, with data-as-a-service offered as an additional option.
Latest developments
Heavyfish, the company's largest platform, is listed with an expected launch date of 2026.
▸Full profile — market position, technology, go-to-market, geography
Market position
Seasats markets a family of three uncrewed surface vessel classes spanning endurance, tactical-speed and heavy-payload roles, and states its systems have been used in commercial, defense and science operations.
Positioning centres on small size and portability (hand deployment by one to two people, air-shippable, pickup-truck transportable), short operator training cycles, low unit cost intended to permit deployment at scale and networked ocean-wide coverage, and a modular payload system with rapid payload integration.
Technology
Solar-electric propulsion with hybrid fuel reserve, ultra-efficient composite hulls with weighted self-righting keels, electric motor pods, marinized solar panels, AIS/GPS and satellite communications with redundant links, GPS-denied navigation, collision avoidance, a bolt-on/plug-in modular payload architecture, C2 interoperability, and UAS launch integration.
Go-to-market
Defense, commercial and scientific maritime users conducting surveillance, security patrol, survey, research and infrastructure monitoring missions.
Geography
Headquartered in San Diego, United States; vessels are marketed as shippable worldwide by commercial or military aircraft, with satellite communications for global reach.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 2
Companies working in the same space as Seasats.
Non-dilutive funding · 1 SBIR/STTR award
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| National Science Foundation | Phase I | 2022 | $256K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
In the news
▸Research sources · 1
primary sources listed
- Seasatsseasats.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Seasats do?
- Seasats builds small, modular autonomous surface vessels for maritime domain awareness, security and ocean survey missions.
- Who founded Seasats?
- Seasats was founded by Mike Flanigan in 2020.
- Who are Seasats's investors?
- Seasats's investors include Dns Capital, Gaingels, Hemisphere Ventures LLC, IceNine, Konvoy Ventures, Monozukuri Ventures, Red Beard Ventures, Shield Capital and 4 more.
- How much funding has Seasats raised?
- Seasats has disclosed $40M raised across 2 of its 4 known rounds.
- Where is Seasats headquartered?
- Seasats is headquartered in San Diego, US.