STEAMRACER-class USV
Purpose-built autonomous surface ship that Sea Machines is offering for the U.S. Navy's MASC program.
Concept
- Unveiled
- Feb 18, 2026
Startup · United States
Sea Machines Robotics
HQ Boston
Boston maker of drop-in autonomy kits for commercial and military vessels.
StartupConcept
Funding5 rounds · $45.5M
- Equity raised
- $45.5M
- Latest
- $14.1MStage undisclosed · Dec 29, 2023
Apr 19, 2017Dec 29, 2023
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Dec 29, 2023 | Undisclosed | $14.1M | — | — | — | Confirmed |
| Oct 30, 2020 | Series B | $5.0M | — | — | Brunswick Corporation, Dolby Family Ventures, NextGen Venture Partners, TechNexus, Toyota AI Ventures | Confirmed |
| Jul 13, 2020 | Undisclosed | $14.9M | — | — | — | Confirmed |
| Dec 7, 2018 | Undisclosed | $10.1M | — | — | — | Confirmed |
| Apr 19, 2017 | Undisclosed | $1.5M | — | — | — | Confirmed |
- UndisclosedConfirmed$14.1MDec 29, 2023
- Series BWith Brunswick Corporation, Dolby Family Ventures, NextGen Venture Partners, TechNexus, Toyota AI VenturesConfirmed$5.0MOct 30, 2020
- UndisclosedConfirmed$14.9MJul 13, 2020
- UndisclosedConfirmed$10.1MDec 7, 2018
- UndisclosedConfirmed$1.5MApr 19, 2017
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Programs1 program
Programs1
| Program | Role | Program status | Confidence |
|---|---|---|---|
| Medium Unmanned Surface Vessel (MUSV) Family of Systems | Competing bidder | Production | Reported |
- Competing bidder · Production
Systems9
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Sources16
Show all 16 sources and supporting evidence
Profile2
- 1
Sea Machines Robotics · Sep 8, 2026 · Supports Organization, Organization · country, Organization · description, Organization · hq city, Organization · name, Organization · website
“Sea Machines Robotics announced today that it has secured a”
- 2
Sixth-Domain · Supports Organization · kind
“{"group": "startups", "id": "69c56749-8a6c-42b3-8279-754972e6217c", "name": "Sea Machines Robotics"}”
Systems9
- 3
Naval News · Feb 19, 2026 · Supports System
“Sea Machines unveiled the STEAMRACER-class unmanned surface vessel (USV) and announced it is strongly positioned in the U.S. Navy’s final competitive evaluation phase”
- 4
Sea Machines Robotics · Supports System
“# FLEETVIEWER Comprehensive Vessel Operations Data & Imagery for Better Analysis and Planning”
- 5
Sea Machines Robotics · Supports System
“# AI-Ris Computer Vision Sensor AI-ris is a camera based computer vision sensor that provides comprehensive situational awareness at sea.”
- 6CompanySELKIE USV Validated in the West Philippine Sea During Tropical Winter 100 - Sea Machines Robotics
Sea Machines Robotics · Supports System
“Earlier this year, Sea Machines conducted **Tropical Winter 100**, an autonomy sea trial involving the [**SELKIE unmanned surface vessel (USV)**](https://sea-machines.com/selkie/) operating off [**Subic Bay**](https://www.navalnews.com/naval-news/2025/06/sea-machines-deploys-selkie-usv-to-the-philippines/) **in the West Philippine Sea”
- 7
Sea Machines Robotics · Supports System
“**SM300-NG** **The New Generation of the time-proven SM300 marine autonomy system.** **Powerful, fleet-tested, vessel-agnostic autonomy on a Class Society-approved hardware set.**”
- 8
Sea Machines Robotics · Supports System
“The new SM300-SP. Purpose-built for high risk naval missions.** Vessel-agnostic Autonomy and Remote Command designed for operators requiring attritable, dependable, low-cost autonomy”
- 9
Sea Machines Robotics · Supports System
“The SMLink Control-API runs on every SM300-equipped vessel, giving your systems a direct, secure line to the autonomy core.”
- 10
Sea Machines Robotics · Supports System
“SMLink Streaming-API provides real-time telemetry, mission, and system data from autonomous and crewed vessels equipped with the SM300 Autonomous Command and Control systems.”
- 11
Sea Machines Robotics · Supports System
“## STORMRUNNER The STORMRUNNER Class USV is a high-performance Autonomous Surface Vessel for Tactical Maritime Operations”
Funding5
- 12Regulatory filingSea Machines Robotics, Inc. - SEC Form D (0001705583-24-000001)
U.S. Securities and Exchange Commission · Jan 12, 2024 · Supports Funding round · amount
“Total Amount Sold $ 14,079,927 USD”
- 13CompanySea Machines, Leader in Autonomous Marine Technology, Completes a $20 Million B-Round Fundraise
Sea Machines Robotics · Oct 30, 2020 · Supports Funding round · amount, Organization · ownership
“(BOSTON; October 30, 2020) – Boston-based Sea Machines Robotics, a leading developer of autonomous systems for ocean-going vessels announced today that it has accomplished its full $20M investment goal with a second close of $5M.”
- 14Regulatory filingSea Machines Robotics, Inc. - SEC Form D (0001705583-20-000001)
U.S. Securities and Exchange Commission · Jul 27, 2020 · Supports Funding round · amount
“Total Amount Sold $ 14,857,395 USD”
- 15Regulatory filingSea Machines Robotics, Inc. - SEC Form D (0001705583-18-000003)
U.S. Securities and Exchange Commission · Dec 21, 2018 · Supports Funding round · amount
“Total Amount Sold $ 10,114,272 USD”
- 16Regulatory filingSea Machines Robotics, Inc. - SEC Form D (0001705583-17-000001)
U.S. Securities and Exchange Commission · May 4, 2017 · Supports Funding round · amount
“Total Amount Sold $ 1,475,738 USD”
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