S

Sea Machines

Autonomous vessel control systems and USVs

Overview

Sea Machines Robotics develops autonomous control, remote-command, and perception systems for maritime vessels. Its hardware and software retrofit or integrate into existing ships, with SM200 for remote-helm control and SM300 for autonomous command and control, plus SM300-NG APIs, a cloud fleet-management platform called FLEETVIEWER, and turnkey unmanned surface vessels. The systems enable computer-guided navigation, obstacle avoidance, remote mission management, and data sharing for maintenance and operations, with options for direct sales or leasing. The goal is to improve safety, efficiency, and capability of commercial vessel operations while expanding into defense work and government contracts.

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About Sea Machines

Simplify's Rating
Why Sea Machines is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Robotics & AutomationHardwareEnterprise SoftwareDefense

Company Size

51-200

Company Stage

Late Stage VC

Total Funding

$39.4M

Headquarters

Boston, Massachusetts

Founded

2013

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Simplify's Take

What believers are saying

  • October 2026 Sea Machines raised $12 million, extending runway for product and sales execution.
  • April 2026 Leonardo DRS selected STORMRUNNER for counter-UAS demos, opening higher-margin defense work.
  • June 2026 Navy selected Sea Machines for MUSV at-sea testing, strengthening credibility with primes.

What critics are saying

  • Sea Machines still missed October 2026 MUSV production awards; competitors won fleets.
  • Defense revenue depends on Navy and SOF buying cycles, leaving lumpy 2027 bookings.
  • An unfavorable Court of Federal Claims ruling or procurement reset could freeze Sea Machines' pipeline.

What makes Sea Machines unique

  • Sea Machines ships retrofit autonomy systems and turnkey USVs across commercial and defense fleets.
  • SM300, SM200, and FLEETVIEWER create a modular stack competitors cannot easily copy.
  • October 2026 Drones.mil marketplace access validates Sea Machines against Navy procurement standards.

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Funding

Total Funding

$39.4M

Below

Industry Average

Funded Over

7 Rounds

Late VC funding comparison data is currently unavailable. We're working to provide this information soon!
Late VC Funding Comparison Coming Soon

Benefits

  • 401(k)
  • Dental insurance
  • Disability insurance
  • Flexible spending account
  • Health insurance
  • Life insurance
  • Paid time off
  • Parental leave
  • Vision insurance

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

3%
Ocean News & Technology
Oct 8th, 2026
Sea Machines Robotics names Courtney Bradbury VP of Program Management for autonomous vessel builds.

Sea Machines Robotics names Courtney Bradbury VP of Program Management for autonomous vessel builds. * 8 October 2026 * Edited By: Lauren Ernst Sea Machines Robotics, a world leader in marine autonomous technology, is growing its leadership team with the hire of Courtney Bradbury, PE, as Vice President of Program Management, a newly created role overseeing the company's management and delivery of large-scale autonomous vessel programs. (Image credit: Sea Machines Robotics) Bradbury will quickly expand this new program group by hiring project-focused personnel, marine and naval engineers, and construction management specialists. "With the recent program awards of full autonomous vessel builds, it's clear that we've successfully added prime contract management to our traditional business of technology development and autonomous product supply. Courtney uniquely brings the right combination of technical skills, construction management, dogged offshore experience, and marine wherewithal to create and lead this new group. And I trust that he'll deliver success," said Michael G. Johnson, Founder and CEO of Sea Machines Robotics. The role responds to a shift in demand, from the nascent innovation market for autonomy to the growing adoption of the technology spurring budgeted fleet programs. Defense acquisition is moving the same way. In September 2026, Sea Machines was one of six companies to successfully complete the most challenging marine autonomy test demonstration to date for the US Navy, thereby advancing the company into the Medium Unmanned Surface Vessel (MUVP) marketplace, an initiative the Navy has described as a strategic shift in naval acquisition designed to rapidly field unmanned technologies by leveraging mature, existing commercial solutions. That maturity is what drew Bradbury to the company. "Michael's vision for marine autonomy and the creation of Sea Machines more than a decade ago has given the company time to get over the learning curve," Bradbury said. "Gaining experience integrating across a broad range of engine manufacturers and navigation systems has allowed the system to be robust against the largest set of equipment in the marine industry, rather than being built for one type of vessel or one use case." "Sea Machines is rapidly evolving from an autonomous system supplier to an autonomous vessel supplier. The newly created department will bring additional capabilities that allow large-scale vessel building programs to be effectively executed through advanced shipbuilding techniques, supply chain management, and robust programmatic-level management," Bradbury added. Bradbury is a registered Professional Engineer in Washington State and holds an Unlimited Tonnage Mate's License and a degree in Naval Architecture and Marine Engineering from the State University of New York Maritime College. Based in Seattle, Bradbury began his career at sea before moving into vessel design and later managing offshore engineering programs. Prior to joining Sea Machines, Bradbury was the Director of Development at Foss Maritime, leading pioneering marine solutions. Don't miss the headlines. ON&T's top news, every week. More in Milestones

Objectivist
Oct 2nd, 2026
Navy selects three firms for 30 vessel MUSV push at $40 million each.

Navy selects three firms for 30 vessel MUSV push at $40 million each. The Navy selected three companies to build 30 medium unmanned surface vessels at an average cost of $40 million each, with first deliveries planned before fiscal year 2027 ends and phase two testing already underway. October 2, 2026 * The Navy selected Galliano Marine Services, Huntington Ingalls Industries and Saronic Technologies to provide 10 MUSVs each. * Each agreement carries an average procurement cost of $40 million per vessel, with initial deliveries scheduled before fiscal year 2027 ends. * The Navy plans to expand its unmanned surface vessel fleet from four to 30 vessels by 2030 in the Indo-Pacific. * Phase two removes the high speed requirement and does not require refueling at sea. The U.S. Navy is moving ahead with plans to procure 30 medium unmanned surface vessels after seven companies competed for contracts under its new autonomous maritime robotics initiative. Three firms emerged from the first phase of testing at sea with production agreements. Galliano Marine Services, Huntington Ingalls Industries and Saronic Technologies received the contracts after completing phase one testing for the Medium Unmanned Surface Vessel Family of Systems program. Each company is set to provide 10 vessels. "Each agreement includes the procurement of 10 MUSVs, at an average procurement cost of $40 million per vessel," the Navy said. "The first MUSVs are scheduled to be delivered to the Navy prior to the end of fiscal year 2027." Sea Machines, Leidos, PacMar Technologies and Birdon also completed testing at sea and competed for the Navy work. Those four companies ultimately were not selected to produce vessels under the announced agreements. Sea Machines, Leidos and PacMar Technologies still received $15 million for completing testing at sea. The three companies will now be hosted on the War Department's drone marketplace, where they remain eligible to receive other contracts. Acting Navy Secretary Hung Cao praised the awards as evidence that the Navy was placing a priority on moving quickly to modernize its fleet. The contracts represent another step in the service's effort to expand its use of autonomous maritime systems. During phase one, the Navy evaluated whether the MUSVs could understand a maritime environment, maneuver without assistance from an operator and deploy at sea for extended periods. Those requirements formed the first competitive hurdle for participating companies. Following recent reports that Congress is considering a nationwide voter ID requirement for federal elections, do you support requiring voters to show identification before casting a ballot? By completing the poll, you agree to receive emails from Objectivist.co, occasional offers from its partners and that you've read and agree to its privacy policy and legal statement. Image Credit: Beachside Stock The Navy announced the beginning of phase two testing on Sept. 23 as it continued the procurement process for autonomous systems. Christopher Miller said the next phase will use less demanding requirements than those applied during phase one. "Obviously with phase one, there were some more challenging requirements that they had to meet and so I'm trying to back off of those so that I can have a healthy competitive industrial base," Miller said during a media roundtable on Tuesday. Miller said phase two will not establish a high speed requirement for the MUSVs. The second phase also will not require the vessels to demonstrate refueling at sea. The service is attempting to grow its unmanned surface vessel fleet from four vessels to 30 by 2030 in the Indo-Pacific. That expansion remains a central numerical target as the Navy moves through testing and procurement. The Navy announced its MUSV marketplace in March, replacing the Modular Attack Surface Craft program. Several companies had already been competing for work through that earlier program when it was closed in favor of the marketplace approach. Blue Water Autonomy and Saildrone initially participated in the Modular Attack Surface Craft program. After they were not selected to continue in the MUSV program, the two companies sued the Navy and alleged that they had been unfairly excluded. The marketplace solicitation issued in March called for MUSVs capable of traveling 2,500 nautical miles at 25 knots. It also required the vessels to carry a load of 25 tons on the payload deck while operating in moderate conditions. The push to accelerate autonomous systems research, development and solicitation followed a June report from the U.S. Government Accountability Office. The report said the Navy needed to quickly rethink how it invested in robotic systems to address urgent fleet needs. Image Credit: DoW Leadership of the Navy's robotic and autonomous systems effort also changed during the procurement campaign. Rebecca J. Gassler, who previously spearheaded the program, was fired on Aug. 5 after serving for only 8 months. Christopher Miller replaced Gassler and assumed duties as acting Direct Reporting Portfolio Manager for Robotic and Autonomous Systems. The Navy created that role on the same day Gassler was removed, placing Miller in charge as phase two testing moved forward. The opinions expressed by contributors and/or content partners are their own and do not necessarily reflect the views of Objectivist. Contact Objectivist for guidelines on submitting your own commentary.

Defense Daily
Jun 3rd, 2026
MUSV at-sea testing limited to seven selectees but could re-open if Navy wants USVs with different requirements.

MUSV at-sea testing limited to seven selectees but could re-open if Navy wants USVs with different requirements. Wednesday, June 3rd, 2026 While the Navy does not plan to add to the seven companies chosen for at-sea prototype testing of Medium Unmanned Surface Vessels (MUSVs) this year, the marketplace could re-open for other USVs with different requirements. The Navy last week announced it selected Sea Machines, Leidos [LDOS], Saronic Technologies, Galliano Marine Services, PacMar Technologies, Birdon and HII [HII] out of over two dozen entrants for the MUSV Family of Systems marketplace program (Defense Daily, June 2). The current MUSV approach is... Not a subscriber or registered user yet? Please contact us at [email protected] or call us at 888-707-5814 (Monday - Thursday 9:00 a.m. - 5:30 p.m. and Friday 9:00 a.m. - 3:00 p.m. ET.), to start a free trial, get pricing information, order a reprint, or post an article link on your website.

Digitalwriters Media Pvt Ltd
Feb 19th, 2026
Sea Machines Robotics Unveils STEAMRACER-Class USV for Navy MASC Program

Sea Machines Robotics unveils steamracer-class USV for Navy MASC program. the STEAMRACER platform is purpose-built for fully unmanned maritime operations and designed to meet the Navy's immediate and future fleet requirements. * Defensemirror.com bureau * 02:18 PM, February 19, 2026 * 586 Sea Machines Robotics has introduced its new STEAMRACER-class unmanned surface vessel (USV) as it advances to the final evaluation phase of the U.S. Navy's Modular Attack Surface Craft (MASC) program. The company said the STEAMRACER platform is purpose-built for fully unmanned maritime operations and designed to meet the Navy's immediate and future fleet requirements. The vessel features AI-enabled remote command architecture, high-speed performance, extended endurance, modular open-deck payload capacity, and a secure onboard data environment to support distributed naval operations. The vessel can also operate in a limited manned mode if required. The Florida-built platform is being developed with partners including St. Johns Ship Building and Sierra Nevada Corporation, which will provide secure communications systems. Sea Machines said the vessel is ready for rapid deployment to support the Navy's growing unmanned fleet requirements. November 21, 2025 @ 06:25 AM May 6, 2022 @ 11:15 AM Martin Defense Group is awarded a $54,435,390 contract for the development of low-cost littoral Unmanned Surface Vessels (USV) for Mobility Enhancement (USVME).The USVs will provide logistical support and re-supply capability to the U September 19, 2020 @ 08:32 AM Lockheed Martin will provide a study for an integrated and capable payload ship, able to patrol for extended durations, as part of the U.S

Robotics & Automation News
Sep 16th, 2025
Sea Machines Robotics launches marine autonomy APIs for third-party systems

Sea Machines Robotics launches marine autonomy APIs for third-party systems.

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