Company lists · Data refreshed September 2026
Top 25 Marine software companies based in the United Kingdom
RevenueBase identified 801 marine software companies headquartered in the United Kingdom as of September 2026 and tracks 13,324 professional contacts across them, including 4,249 with verified work emails. London is the largest hub.
This list covers marine software companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest marine software companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 681 contacts → | ||||
Strong evidence “SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 545 contacts → | ||||
Partial evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 490 contacts → | ||||
Indirect evidence “UTEC, Acteon’s Geo-services business line, harnesses data to optimise designs, save time and maximise your project’s economic value by providing a holistic understanding of the…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 448 contacts → | ||||
Partial evidence “Teledyne Raymarine, a world leader in marine electronics, develops and manufactures the most comprehensive range of electronic equipment for the recreational boating and light…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 435 contacts → | ||||
Partial evidence “Always On"- We are at the heart of a diverse and interdependent global maritime eco-system.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 403 contacts → | ||||
Indirect evidence “Above, below and beyond the world’s oceans.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 387 contacts → | ||||
Partial evidence “Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 295 contacts → | ||||
Partial evidence “Welcome to OneOcean: the ocean’s digital ecosystem and trusted partner for maritime businesses worldwide.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 279 contacts → | ||||
Partial evidence “Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 249 contacts → | ||||
Partial evidence “An International Shipowning and Marine Investment Company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 240 contacts → | ||||
Partial evidence “A&P, part of the APCL Group, is a global marine engineering business which operates six dry docks across two strategic locations in the UK and delivers engineering excellence to…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 210 contacts → | ||||
Partial evidence “A Scottish engineering company founded in 1898, MacTaggart Scott supports the Naval Defence and Marine market.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 183 contacts → | ||||
Partial evidence “Pole Star Global is a maritime intelligence and technology solutions company, focusing on reducing risk and optimising trade efficiency.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 161 contacts → | ||||
Partial evidence “Creating clarity, control and confidence for modern maritime operations with OpenOcean STUDIO.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 157 contacts → | ||||
Partial evidence “The MDL team includes experienced and professionally qualified specialists in all facets of marina development and marina operations.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 156 contacts → | ||||
Partial evidence “Ferguson Marine (Port Glasgow) Limited is Scotland's leading company in new build, refit and ship repair.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 155 contacts → | ||||
Indirect evidence “SeaTec provides a comprehensive range of services and products to meet the needs of the shipping, offshore and defence industries.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 146 contacts → | ||||
Strong evidence “As the leading independent provider of commercial software for global maritime trade, we’re unleashing the power of data to help drive sustainable shipping.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 132 contacts → | ||||
Partial evidence “Founded in 2018 by a team of Navy veterans, Orca AI, a maritime tech startup, empowers shipping companies to enhance their operational safety, efficiency, and sustainability…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 129 contacts → | ||||
Partial evidence “SRT Marine Systems PLC is a global leader and innovator in maritime surveillance, intelligence, navigation safety and situational awareness.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 113 contacts → | ||||
Strong evidence “SpecTec is a market-leading maritime technology company specialising in asset management software.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 107 contacts → | ||||
Partial evidence “James Fisher Offshore (JFO) is an international supplier of marine back deck, specialist subsea equipment and engineering services supporting the global subsea contractors across…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 103 contacts → | ||||
Indirect evidence “Star International specialises in keeping vessels safe and compliant.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 91 contacts → | ||||
Indirect evidence “Cathelco safeguards your fleet by managing biofouling, ensuring corrosion protection, and generating freshwater Our offering: Ultrasonic Antifouling - Cathelco's DragGone™…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 89 contacts → | ||||
Partial evidence “Southampton Marine Services Ltd was established in 2004 and specialises in ship / work boat building, vessel repair and marine engineering; we trade in four markets - Commercial…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marine software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names marine software companies.
- Partial evidence
- Its own public description names part of marine software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name marine software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 801 marine software companies based in the United Kingdom
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Marine software companies based in the United Kingdom at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 801 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “marine software companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among marine software companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 4,249 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 14, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Marine software companies by metro
- Marine software companies in London80
- Marine software companies in Southampton36
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many marine software companies are there based in the United Kingdom?
RevenueBase identified 801 marine software companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
SDSD, headquartered in London, tops this list with the largest team on record.
Which city has the most marine software companies?
London leads with 80 headquartered companies, followed by Southampton (36) and Aberdeen (22).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,249 verified decision-maker contacts tracked across these 801 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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