Best Maritime Tech Companies in California, United States
The 80 best Maritime Tech companies in California, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Saildrone.
Ranked: Best Maritime Tech companies in California
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Saildrone Developer of autonomous unmanned surface vehicle 55Funding top 23%Moat top 31%Growth top 35%Tech top 42% All 10 signals ▾Fundingtop 23% Moattop 31% Growthtop 35% Techtop 42% Markettop 47% Talentbottom 49% Patentsbottom 45% Globalbottom 43% Innovationbottom 37% Newsbottom 22% Funding: Raised $190M across 4 rounds · 4 rounds over 10 yrs (0.4/yr) Moat: Editorial + unicorn rating 8/10 · IP moat: 18 patents rank vs industry peers · Fliar Intelligence Index 55/100 | $190M | 13 mo ago | 250 | Richard Jenkins Founder & CEO | WebflowSalesforceGSAP+17 | Top 5M | 18 patents Modular sensor mounts and square‑rig wing sails for autonomous unmanned surface vehicles. | 2 job openings · 1 launch |
| 2 | Arc Boats Manufacturer of electric ships 53Funding top 27%Growth top 35%Tech top 36%Moat top 39% All 9 signals ▾Fundingtop 27% Growthtop 35% Techtop 36% Moattop 39% Producttop 40% Newstop 45% Talentbottom 49% Marketbottom 38% Globalbottom 32% Funding: Raised $137M across 3 rounds · 3 rounds over 5 yrs (0.6/yr) Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 53/100 | $137M | 3 mo ago | 55 | Mitch Lee Co-Founder & CEO | SanityNode.jsTailwind CSS+24 | Top 5M | — | 2 job openings · 1 internship · 1 launch |
| 3 | Liquid Robotics Developer of unmanned surface vehicles propelled by wave energy | $82M | 119 mo ago | 83 | — | WordPressMySQLSalesforce+26 | Top 10M | 167 patents Autonomous ocean surface robots powered by wave energy and solar navigation systems | — |
| 4 | Sofar Ocean Provider of marine weather forecasts and ocean condition monitoring solutions 64AI top 15%Tech top 24%Funding top 31%Moat top 31% All 11 signals ▾AItop 15% Techtop 24% Fundingtop 31% Moattop 31% Growthtop 35% Talenttop 38% Producttop 46% Marketbottom 45% Patentsbottom 38% Globalbottom 37% Innovationbottom 34% AI: Holds AI/ML patents (G06N-family CPC) Tech: 50 technologies across 5/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 rank vs industry peers · Fliar Intelligence Index 64/100 | $48M | 14 mo ago | 91 | Tim Janssen Co-Founder & CEO | SentryApple iCloud MailGoogle Workspace+31 | Top 5M | 10 patents Marine meteorological forecasting and real-time metocean sensor integration systems | 1 partnership |
| 5 | Ulysses Developer of autonomous underwater vehicles and integrated hardware and software systems 45Talent top 28%Funding top 45%Global bottom 33% All 3 signals ▾Talenttop 28% Fundingtop 45% Globalbottom 33% Talent: 4 named leaders on record · 4 C-suite/founder profiles curated Funding: Raised $46.1M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) rank vs industry peers · Fliar Intelligence Index 45/100 | $46M | 2 mo ago | — | Will Brien Co-Founder & President | — | — | — | — |
| 6 | STAX Provider of emission control and treatment system 29Funding top 27%Patents top 32%Innovation top 35%Talent top 38% All 10 signals ▾Fundingtop 27% Patentstop 32% Innovationtop 35% Talenttop 38% Moatbottom 49% Growthbottom 42% Globalbottom 40% Marketbottom 21% Techbottom 19% Newsbottom 18% Funding: Raised $40.0M across 3 rounds · 3 rounds over 2 yrs (1.5/yr) Patents: 12 patents matched (strict assignee match) · 12 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 29/100 | $40M | 15 mo ago | 3 | Bob Sharp Founder & President | WordPressMySQLPHP+17 | Top 5M | 12 patents High‑efficiency fluid mixing and liquid atomization devices using high‑helix mass‑flow technology | 2 job openings |
| 7 | GetMyBoat Operator of an online platform providing boat rentals and yacht charters | $36M | 51 mo ago | 7 | — | SentryZendeskNode.js+23 | Top 500k | — | — |
| 8 | Dockwa Online portal for dock and mooring reservations | $29M | 67 mo ago | 98 98 → 51 (-48%) | Matthew Fradette Co-Founder & CBO | SentryApple iCloud MailGoogle Workspace+38 | Top 500k | — | — |
| 9 | Clear Metal Provider of AI and web-enabled data analytics platforms for the container shipping industry | $27M | 76 mo ago | 56 | — | — | — | — | — |
| 10 | Haven Software Platform for International Shippers | $19M | 78 mo ago | 226 | — | — | — | 18 patents Advanced fluid handling and gas‑liquid separation technologies for industrial process equipment. | — |
| 11 | Vizion Provider of cloud-based API for marine container, and vessel tracking | $19M | 47 mo ago | 50 | Tyler Hughes Co-Founder & CTO | WebflowApple iCloud MailGoogle Workspace+25 | Top 5M | — | — |
| 12 | BlueCargo Platform offering scheduling and reporting solutions for port operations | $15M | 40 mo ago | 13 | Alexandra Griffon Co-founder & CEO | — | — | — | 1 award |
| 13 | Seasats Manufacturer of unmanned surface vehicles for sea inspection 48Funding top 33%Growth top 35%Tech top 37%Talent top 38% All 8 signals ▾Fundingtop 33% Growthtop 35% Techtop 37% Talenttop 38% Moattop 39% Newsbottom 48% Globalbottom 37% Marketbottom 29% Funding: Raised $11.0M across 5 rounds · 5 rounds over 4 yrs (1.2/yr) Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 48/100 | $11M | 5 mo ago | 20 | Michael Flanigan Co-Founder & CEO | WordPressMySQLPHP+22 | Top 10M | — | 1 partnership · 1 expansion |
| 14 | Locix Developer of wireless sensors for building-wide installation | $10M | 77 mo ago | 26 | Vivek Khandelwal Co-Founder | — | — | 88 patents Precise RF-based node localization using time‑difference‑of‑arrival and ranging techniques | — |
| 15 | Portex Provider of web-based freight procurement management solutions | $8M | 21 mo ago | 7 | — | WebflowApple iCloud MailGoogle Workspace+19 | Top 50M | 10 patents Needle and vial safety devices preventing accidental needle sticks and removal. | — |
| 16 | Navier Developer of electric propulsion systems and hydrofoils for recreational boating | $7M | 36 mo ago | 14 | Sampriti Bhattacharyya Co-Founder & CEO | WebflowAmazon Web ServicesGSAP+19 | Top 10M | 15 patents AI-driven adaptive network architecture, feedback control, and energy-aware resource management | 1 award |
| 17 | Bearing.ai Provider of AI-powered platform for optimizing maritime shipping operations | $7M | 46 mo ago | 9 | — | Node.jsChakra UITailwind CSS+10 | Top 50M | — | — |
| 18 | Shone Provider of AI-powered risk management solutions for the maritime industry | $4M | 95 mo ago | 6 | Clement Renault Co-Founder | — | — | — | — |
| 19 | Ocean Aero Provider of an AUV for surface and subsurface monitoring applications | $4M | 5 mo ago | 50 | Kevin Decker CEO | Cart FunctionalitySquarespace CommerceSquarespace+15 | Top 10M | 24 patents Advanced autonomous marine navigation and adaptive propulsion/wing systems for vessels | — |
| 20 | OpenROV Marine technology company focused on ocean data and open hardware | $2M | 115 mo ago | 3 | — | — | — | 8 patents Patents concentrated in transport & manufacturing processes | — |
| 21 | SubSeaSail Manufacturer of autonomous semi-submersible systems | $2M | 51 mo ago | 8 | — | Cart FunctionalitySquarespace CommerceSquarespace+19 | Top 50M | 40 patents Patents concentrated in transport & manufacturing processes | 1 job opening |
| 22 | DeepFlight Designs and develops submarines | $1M | 126 mo ago | 1 | — | — | — | — | — |
| 23 | AIRSIS Cloud-based remote asset tracking and management software solution for maritime industry | $1M | — | 31 | — | — | — | 8 patents Extracting and analyzing maritime communication data for business intelligence | — |
| 24 | Marine Applied Research and Exploration Marine research and exploration for ocean conservation and management | $958K | 81 mo ago | — | Dirk Rosen Founder | WordPressMySQLPHP+26 | Top 50M | — | 1 launch |
| 25 | Leadinius SaaS based Asset Management Tool | $687K | 156 mo ago | — | Pascal Wiscour Conter Founder & CEO | — | — | — | — |
| 26 | Parker Maritime Technologies Provider of fuel efficiency management solutions for the maritime industry | $500K | 49 mo ago | — | William Parker III CEO | — | — | 15 patents Marine hull drag reduction via transverse hydro‑laminar flow and air‑lubrication systems | — |
| 27 | Marine Advanced Robotics Provider of unmanned surface vehicle systems for marine industries | $270K | 45 mo ago | 6 | — | Cart FunctionalitySquarespace CommerceSquarespace+14 | Top 50M | — | — |
| 28 | Sea Drone Pro Develops ROV for underwater exploration | $225K | 64 mo ago | 9 | — | — | — | — | — |
| 29 | OutSail Technologies Manufacturers of wind-powered vessels for the maritime industry | $125K | 36 mo ago | 4 | Joseph Oorebeek Co-Founder | — | — | — | — |
Top 12 Maritime Tech companies in California
#1
Series C · Los Angeles, California · founded 2021 · 55 employees$137Mraised▾
Manufacturer of electric ships. It designs and develops boats using marine-grade aluminium materials. Its features include aluminium hulls, custom-built batteries, and electric propulsion engines.
- Mar 2026Series C$50M
- Sep 2023Series B$70M
- Nov 2021Series A$30M
- Oct 2021Seed—
#2
Series A · San Francisco, California · founded 2023$46.1Mraised▾
Developer of autonomous underwater vehicles and integrated hardware and software systems. The company builds autonomous systems for maritime operations. These systems are designed to restore ecosystems, defend infrastructure, and steward expansive domains. The company's autonomous launch, recovery, and recharge system enables remote mission execution without human intervention. The modular design allows for swapping modules and payloads for various subsea tasks.
- Mar 2026Series A$38.1M
- 2025Seed$8M
#3
Series C · Alameda, California · founded 2012 · 250 employees$190Mraised▾
Developer of autonomous unmanned surface vehicle. The USVs are capable of carrying a sensor suite, deploying sensor payloads, relaying data back to shore in real-time via satellite, and can navigate to any part of the world’s oceans. They are useful for ocean monitoring, oil and gas monitoring, piloting for ships, and more. It can be launched into the ocean from a ship or a dock.
- May 2025Series C$60M
- Oct 2021Series C$100M
- May 2018Series B$60M
- Sep 2016Series A$14M
#4
Series A · San Diego, California · founded 2020 · 20 employees$11Mraised▾
Manufacturer of unmanned surface vehicles for sea inspection. It develops solar-powered autonomous vehicles that can be equipped with sensors, security cameras, and communication systems. Its features include pan and tilt cameras, dolphin friendliness, and remote management.
- Jan 2026Series A$20M
- Feb 2025Series A$10M
- Dec 2024Series A$9.1M
- Sep 2022Series A$10M
#5
Series B · San Francisco, California · founded 2012 · 91 employees$47.6Mraised▾
Provider of marine weather forecasts and ocean condition monitoring solutions. The company offers platforms for voyage optimization, marine sensing, and real-time ocean data. These platforms support maritime shipping, marine research, and sustainable commercial solutions. The company’s offerings include voyage simulation, optimization, and reporting, as well as tools for monitoring sound, water quality, water level, temperature, and currents.
- Apr 2025Grant (prize money)$448.9K
- Apr 2025Grant (prize money)$718.8K
- Nov 2024Series B$22.2M
- Sep 2023Series B$5M
#6
Series D · San Diego, California · founded 2012 · 50 employees$4Mraised▾
Provider of an AUV for surface and subsurface monitoring applications. The vehicle is self-powered by solar rechargeable lithium batteries and can carry payloads. It is compatible with sensors for weather, dissolved oxygen, acoustic modems, magnetometer, directional drilling, satellite communications, seismic survey, and hydrocarbon detection. It can serve as persistent ISR and cross-communication gateway for critical air, surface, and subsurface applications.
- Jan 2026Series D—
- Sep 2022Series C$4M
- Jul 2021Series C—
- Aug 2018Series B—
#7
Series C · Los Angeles, California · founded 2016 · 3 employees$40Mraised▾
STAX engineering is a provider of emission control and treatment system for maritime. It is a mobile diesel emission reduction system that removes all NOx, SOx, PM, and CO2 from both oceangoing vessels and backup generators. It can also remove emissions from ships at anchor and boiler emissions at berth.
- Feb 2025Conventional Debt$60M
- Feb 2025Series C$10M
- Jul 2024Series C$40M
#8
Seed · San Francisco, California · founded 2020 · 7 employees$7.8Mraised▾
Provider of web-based freight procurement management solutions. The company offers solutions for managing spot procurement processes for shippers or freight forwarders. Users can request, compare and benchmark spot quoting. It also provides freight spend data, insights, and detailed data reports.
- Sep 2024Seed$6.2M
#9
Series B · San Francisco, California · founded 2011 · 7 employees$36Mraised▾
Operator of an online platform providing boat rentals and yacht charters. The platform connects individuals seeking boat rentals with boat owners and captains. It offers various types of boats, including yachts, jet skis, sailboats, and fishing charters. The platform facilitates communication between renters and owners to customize trips.
- Feb 2022Series B$21M
- Feb 2020Series A$3.5M
- Mar 2018Series A$10M
- Jan 2015Angel$1M
#10
Seed · San Francisco, California · founded 2018 · 13 employees$15Mraised▾
Platform offering scheduling and reporting solutions for port operations. It provides users with AI and web based predictive analytics solutions to optimize terminal port operations. It enables users to streamline the port operations by providing visibility into vessel and gate schedules. It provides real time view into pickup availability, return locations, restrictions and more.
- Feb 2023Seed$11M
- Nov 2018Seed$3M
- 2018Seed$150K
#11
Acquired · Sunnyvale, California · founded 2007 · 83 employees$82.1Mraised▾
Developer of unmanned surface vehicles propelled by wave energy. The USV works by harvesting the energy of waves for propulsion and captures information from the oceans. It is also equipped with solar panels for propulsion. It uses the differential in wave energy on the surface and at a depth to propel itself. The robot is capable of autonomous path charting, vessel detection, collision avoidance, and multi-vehicle fleet operations. The USV finds application in defense, environmental assessment, and maritime domain awareness.
- Jun 2016Series E$105K
- Oct 2015Series E$175K
- Mar 2013Series E$45M
- Jun 2011Series D$22M
#12
Series A · San Francisco, California · founded 2018 · 50 employees$18.8Mraised▾
Provider of cloud-based API for marine container, and vessel tracking. The company offers a platform for end-end logistics visibility & container tracking. Its solutions include ocean freight tracking, bill of lading, exception alert API, terminal visibility, vessel verification, vessel tracking, container monitoring, and drayage visibility.
- Jul 2022Series A$14M
- Sep 2021Seed$3.2M
- Feb 2021Seed$1.5M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Maritime Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What California researches in maritime tech
- California Maritime Academy8
- University of Southern California4
- University of California, Berkeley2
- University of California, Los Angeles2
- California State University System1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.