Sea-Kit International

What Sea-Kit International does

Sea-Kit International is a UK-based designer and builder of Uncrewed Surface Vessels (USVs) headquartered in Tollesbury, Essex. Founded in 2017, the company produces a portfolio of remotely operated vessels ranging from 12m to 36m — the X-Class (12m), H-Class (12m/15m), XL-Class (18m, up to 7-tonne payload), Omega (extended endurance), and Sigma (36m, superyacht support) — all controlled via its proprietary G-SAVI platform from shore-based Remote Operations Centres. The vessels feature hybrid diesel-electric propulsion with marinized PCB-based hydrogen fuel cell integration, configurable payload bays, and the ability to launch and recover ROVs and AUVs. Sea-Kit holds five Lloyd's Register Unmanned Marine Systems certifications (the most ever awarded), the first-ever UMS certificate (2021), and the first Cat 0 approval from the UK Maritime and Coastguard Agency for a 12m USV (2024).

The company operates an enterprise field-sales model selling bespoke vessels direct to commercial, scientific, defence and luxury yacht clients. Revenue streams include hardware sales of USVs, customization and integration services for offshore energy and research operators, and managed remote survey operations. Key customers include Fugro (which operates a global fleet of X-Class Blue Essence USVs), NIWA (Tonga caldera survey), the Port of London Authority (ZEPHR hydrogen project), and The Nippon Foundation (Seabed 2030). Operations are supported by a UK production facility tripled in capacity in 2023 and partnerships with the University of Essex, Bramble Energy, Lloyd's Register, and government programs such as Innovate UK and the Department for Transport.

Differentiation rests on regulatory depth, patented vessel designs, ISO 9001 quality certification, and the XPRIZE-winning track record. Quantified outcomes include 95% CO₂ reduction and 100% elimination of offshore HSE exposure in port survey operations, sub-2% fuel consumption of typical survey vessels, and seabed mapping records exceeding 1,000 sq km across ocean-floor campaigns.

Name

Sea-Kit International

Legal name

SEA-KIT International

Website

https://sea-kit.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

Sea-Kit International designs and builds remotely operated Uncrewed Surface Vessels (12m–36m) for commercial survey, scientific research, defence, and luxury yacht customers, earning multiple Lloyd's Register certifications and serving Fugro as its largest global fleet operator.

Ownership category

akta.pro rank

Product category

Uncrewed Surface Vessels (Maritime Robotics)

NAICS

Ship and Boat Building (33661), Ship Building and Repairing (336611), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Support Activities for Water Transportation (4883)

SIC

Ship & Boat Building & Repairing (3730), Water Transportation (4400)

akta.pro primary industry

Unmanned Surface Vehicles (USV) & Autonomous Maritime Surface Platforms (IMABAIAE)

akta.pro secondary industries

Maritime Unmanned Systems (USV/UUV) & Control Stations (IMABAKAJ), Unmanned Naval Vessels (USV/UUV) (IMAJABAH)

Keywords

• Uncrewed surface vessels
• Unmanned marine systems
• Remote vessel operations
• Maritime survey vessels
• Hydrogen fuel cell boats

Headquarters

HQ city

Tollesbury

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Revenue model

1. USV Vessel Sales and Manufacturing: Design and build of uncrewed surface vessels including X-Class (12m), H-Class (12m/15m), XL-Class (18m), Omega, and Sigma (36m) classes. Vessels are sold to commercial, defense, and luxury yacht clients with configurable payload areas.
2. Bespoke vessel configuration and customization: Customization services for offshore energy sector clients requiring bespoke vessels for survey operations for offshore wind and oil and gas infrastructure
3. Remote survey and operations services: Operational services including remotely controlled survey operations from Remote Operation Centres

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Sea-Kit International designs, manufactures, and operates a portfolio of Uncrewed Surface Vessels (USVs) ranging from 12m to 36m, including X-Class, H-Class, XL-Class, Omega, and Sigma platforms. The vessels are remotely controlled via the proprietary G-SAVI control and surveillance platform, enabling over-the-horizon operations for commercial survey, defence, ocean science, and luxury superyacht support applications. The company also offers bespoke vessel configuration, customisation, and remote survey operations services from shore-based Remote Operation Centres.

Product overview

Sea-Kit International designs and builds a portfolio of Uncrewed Surface Vessels (USVs) ranging from 12m to 36m, operated via the proprietary G-SAVI control platform. The product line includes: X-Class (12m versatile mother-ship platform for commercial/defence), H-Class (12m/15m with enhanced sensors and composite hull), XL-Class (18m with 7-tonne payload capacity), Omega (extended endurance with autonomous launch/recovery), and Sigma (36m for luxury superyacht support). The fleet shares core technologies including hybrid propulsion, remote operations capability, and modular payload configurations. USVs serve sectors including commercial survey, ocean science, defence, security, and luxury yacht support.

Differentiator

Problem solved

Functional benefit

Brands

• G-SAVI: Proprietary control and surveillance platform used for remote operation of SEA-KIT USVs from control centres.
• SEA-KIT X
• SEA-KIT H-Class
• SEA-KIT XL
• SEA-KIT Omega
• SEA-KIT Sigma

Products and services

• SEA-KIT X-Class USV 12-metre remotely-controlled Uncrewed Surface Vessel providing a versatile, robust platform for naval defence and maritime security operations. Features large payload capacity, long range and extended endurance. Can launch and recover AUVs, UUVs and ROVs. Controlled via proprietary G-SAVI platform. Design is patented and holds Lloyd's Register UMS certification.
• SEA-KIT H-Class USV 12m and 15m USV variants with highly configurable design, retractable gondola and dual sensor deployment options. Features composite hull reducing weight with fuel savings, active stabilisers minimising roll, and reduced surface/subsurface noise and vibration. Accommodates sensors such as Single/Multi Beam Echo Sounders, Sub Bottom Profilers, CTD, and side scan sonar.
• SEA-KIT XL-Class USV 18-metre Uncrewed Surface Vessel with payload capacity up to 7 tonnes and powerful bollard pull. Suitable for towing seismic cables and larger sensors. Features fully redundant station holding capability, Cat 0 operations for unrestricted use, and large lithium UPS supply. Can launch and recover AUVs, UUVs and ROVs. Design is patented and holds Lloyd's Register UMS certification.
• SEA-KIT Omega (Ω) USV Extended endurance USV designed for fully uncrewed maritime operations. Capable of launching, retrieving and controlling under, on and above water vehicles and sensors including ROVs and AUVs. Large payload capacity with onboard processing and communication systems. Hybrid propulsion for long endurance with minimal acoustic signature and reduced CO2 footprint.
• SEA-KIT Sigma (Σ) USV 36-metre USV for luxury superyacht support operations. Delivers benefits of traditional support vessels with significantly reduced environmental footprint, lower capital and operating costs, and flexible design enabling owner-specific configuration. Features modular layout for rapid reconfiguration.
• G-SAVI Control and Surveillance Platform Proprietary control and surveillance platform used to operate SEA-KIT USVs. Provides safe and secure operation from remote control centres, enabling over-the-horizon mission capability via satellite communications.
• ZEPHR Hydrogen USV Green hydrogen-fuelled USV platform with local green hydrogen production and storage. Primary payload includes high resolution multibeam echosounder with capability for LiDAR, cameras, environmental monitoring equipment and aerial drone launch/recovery. Uses two hydrogen fuel cell systems for redundancy.
• Bespoke Vessel Configuration and Remote Survey Operations Customisation services for offshore energy sector clients requiring bespoke vessels for survey operations including offshore wind and oil and gas infrastructure, plus operational services including remotely controlled survey operations from Remote Operation Centres.

Quantifiable outcome

• 95% CO2 reduction compared to traditional survey methods
• +3 more outcomes

Named customers4 records

Segments3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature6 records

Partnerships

Eleven partnerships are on record, tiered core and secondary.

• Marine2ocoreStrategic or Co-development Partner · 1 September 2023Maritime decarbonization partner for ZEPHR project building land-based infrastructure to produce green hydrogen via renewable energy and electrolysis of water.
• Marine ZerosecondaryImplementation/ SI/ Consulting Partner · 1 September 2023Engineering design and sustainability specialists supporting ZEPHR project with regulatory compliance and design/integration of hydrogen dispensing facility.
• Port of London Authority (PLA)coreStrategic or Co-development Partner · 1 September 2023Consortium partner hosting ZEPHR hydrogen refilling station on River Thames in London and will operate the ZEPHR USV during three-year demonstration period.
• NIWA (National Institute for Water and Atmospheric Research)coreStrategic or Co-development Partner · 1 April 2022New Zealand research institute leading Tonga Eruption Seabed Mapping Project (TESMaP). SEA-KIT USV Maxlimer deployed for Phase 2 survey inside volcano caldera.
• Bramble EnergycoreTechnology or Integration · 1 March 2020Clean Maritime Demonstration Competition project to install PCB-based hydrogen fuel cell on USV Maxlimer. Bramble Energy designs and manufactures marinized printed circuit board fuel cell systems.
• Lloyd's RegistercoreTechnology or Integration · 1 January 2020Long-standing partnership for UMS certification of SEA-KIT vessel designs. Lloyd's Register awarded first-ever UMS certificate to SEA-KIT in 2021 and continues to certify new vessel designs.
• UK Maritime and Coastguard AgencycoreTechnology or Integration · 1 January 2020Government agency providing Category 0 certification for SEA-KIT USVs, the highest level of approval for workboats enabling unrestricted operations.
• FugrocoreStrategic or Co-development PartnerMajor customer operating fleet of SEA-KIT X-Class USVs (Blue Essence). Fugro is a world-leading geo-intelligence specialist and the largest operator of SEA-KIT vessels for commercial offshore survey projects globally.
• University of EssexcoreStrategic or Co-development PartnerKTP (Knowledge Transfer Partnership) funded by Innovate UK to develop secure and intelligent communication systems for USV control. Academic partners include Dr Leila Musavian (telecommunications) and Dr Nikolaos Thomas (machine learning for communications).
• GEBCO Seabed 2030 ProjectsecondaryStrategic or Co-development PartnerProject supporting global ocean floor mapping initiative, research supported by SEA-KIT's TESMaP contributions.
• GNS SciencesecondaryStrategic or Co-development PartnerNew Zealand earth science research institute supporting TESMaP project with geological expertise.

Scale indicators11 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Maritime Robotics: Norwegian specialist in autonomous surface vessels for hydrographic survey, inspection, and research — direct overlap with SEA-KIT's H-Class/X-Class use cases in ocean mapping and offshore energy.
• Saildrone: US-based designer and operator of uncrewed surface vessels for ocean data collection, defense, and hydrography — directly competes with SEA-KIT in autonomous, long-endurance survey USVs and has secured significant US Navy and science funding.
• AutoNaut: UK-based designer of wave-propelled uncrewed surface vessels for long-endurance ocean data collection; competes with SEA-KIT in autonomous, low-emission ocean monitoring missions.
• L3Harris ASV (formerly ASV Global): UK/US builder of autonomous surface vehicles for defense, commercial, and scientific survey; now part of L3Harris, providing overlapping USV product lines (including the C-Worker line) and competing for the same naval and offshore survey contracts as SEA-KIT.

Broad incumbents

• Thales: Global defense and naval systems prime with unmanned maritime capabilities and integrated combat systems — competes with SEA-KIT for naval USV procurement programs at a much larger scale.
• Subsea 7: Global subsea engineering and construction contractor with autonomous vehicle capabilities for IMR and survey — adjacent peer in offshore autonomous operations rather than direct USV builder competition.
• Teledyne Technologies: Supplier of oceanographic instruments, AUVs, and marine sensing systems; competes with SEA-KIT for survey payload contracts and has a broad defense/marine instrumentation portfolio.
• Kongsberg Maritime: Major maritime technology incumbent offering USVs, AUVs, and integrated naval/autonomous systems — broader portfolio but overlapping with SEA-KIT on remotely operated survey and defense platforms.

Others

• Fugro: Largest customer of SEA-KIT and operator of the Blue Essence USV fleet; while not a builder, Fugro is both an anchor buyer and an adjacent peer in uncrewed offshore survey services and could in principle expand into USV operations.

Emerging players

• Ocean Infinity: Marine data and sub-sea robotics operator running its own fleet of USVs and AUVs (Armada) for survey and offshore energy — competes with SEA-KIT as an operator/buyer dynamic and a peer in marine autonomous services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/infoseakit
• YouTubeyoutube.com/channel/UCpHN9O8f5Js-8OzgLf5tMZQ
• LinkedInlinkedin.com/company/sea-kit-international-ltd
• Facebookfacebook.com/Sea-Kit-International-Ltd-270476300459555

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sea-Kit International