Company lists · Data refreshed September 2026

Top 25 Marine system software developers based in the United Kingdom

Name: Marine system software developers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 137 companies tracked

RevenueBase identified 137 company matches for marine system software developers associated with the United Kingdom as of September 2026 and tracks 2,822 professional contacts across them, including 784 with verified work emails. London is the largest hub.

This list covers company matches for marine system software developers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

137Companies

2,822Contacts tracked

784Verified emails

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The 25 largest marine system software developers based in the United Kingdom

Ranked by team size

Top 25 of 137 company matches for marine system software developers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SDSD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	681 contacts →
	Exact match “SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Raymarine	Exact match	Fareham, United KingdomHQ recorded Sep 28, 2026	201-500	448 contacts →
	Exact match “Teledyne Raymarine, a world leader in marine electronics, develops and manufactures the most comprehensive range of electronic equipment for the recreational boating and light…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Sperry Marine	Exact match	New Malden, United KingdomHQ recorded Sep 28, 2026	201-500	279 contacts →
	Exact match “Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	SEA	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	146 contacts →
	Exact match “As the leading independent provider of commercial software for global maritime trade, we’re unleashing the power of data to help drive sustainable shipping.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	SRT Marine Systems PLC	Exact match	Midsomer Norton, United KingdomHQ recorded Sep 28, 2026	51-200	129 contacts →
	Exact match “SRT Marine Systems PLC is a global leader and innovator in maritime surveillance, intelligence, navigation safety and situational awareness.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Spectec	Exact match	Manchester, United KingdomHQ recorded Sep 28, 2026	51-200	113 contacts →
	Exact match “SpecTec is a market-leading maritime technology company specialising in asset management software.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Seebyte	Exact match	Edinburgh, United KingdomHQ recorded Sep 28, 2026	51-200	81 contacts →
	Exact match “SeeByte provides clients in the global maritime industry with the most advanced software solutions to enhance the capabilities of their uncrewed systems.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Ulysses Systems	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	78 contacts →
	Exact match “Ulysses Systems is a leading marine industry provider of enterprise software.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Coda Octopus Products	Exact match	Edinburgh, United KingdomHQ recorded Sep 28, 2026	51-200	41 contacts →
	Exact match “Coda Octopus is a global leader and specialist in underwater technologies including being the patent holder for the real-time 3D sonar, the Echoscope®.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Gtmaritime	Exact match	Warrington, United KingdomHQ recorded Sep 28, 2026	11-50	35 contacts →
	Exact match “Since 1998, we have been providing a range of technology solutions and services for Maritime IT teams helping them manage communications, security, and fleet operations from shore…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	MJR Power & Automation	Exact match	Thornaby, United KingdomHQ recorded Sep 28, 2026	11-50	35 contacts →
	Exact match “MJR Power & Automation offers a comprehensive range of Marine Electrical Engineering Services including: Marine Electrical Consultancy, Marine Electrical & Automation Design…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Triton Software LTD	Exact match	Aberdeenshire, United KingdomHQ recorded Sep 28, 2026	51-200	28 contacts →
	Exact match “For over 25 years, Triton Software (Formerly Pisys Marine) is one of a leading company in marine domain providing the software, services and data solutions to its customers in the…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	AST Reygar	Exact match	Stoke Gifford, United KingdomHQ recorded Sep 28, 2026	1-10	27 contacts →
	Exact match “AST Reygar provides robust and reliable performance monitoring and control solutions for both crewed and uncrewed vessels, of all sizes and functions, in the complex marine…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Clearwater Dynamics	Exact match	Poole, United KingdomHQ recorded Sep 28, 2026	11-50	24 contacts →
	Exact match “Clearwater Dynamics delivers industry‑leading technology solutions specialising in IoT connectivity, vessel tracking, and risk‑mitigation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Sirm UK Marine LTD	Exact match	Chelmsford, United KingdomHQ recorded Sep 28, 2026	51-200	22 contacts →
	Exact match “SIRM UK is the only organisation anywhere in the world that has been continuously involved in the supply and support of ships’ radio installations since the very inception of…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Chersoft LTD	Exact match	Sheffield, United KingdomHQ recorded Sep 28, 2026	11-50	22 contacts →
	Exact match “CHERSOFT design high quality marine data management solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Actisense	Exact match	Poole, United KingdomHQ recorded Sep 28, 2026	11-50	21 contacts →
	Exact match “Actisense aim to be the installers product of choice by making navigation safer with the most reliable boat electronic systems.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Marino Tech Services	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	19 contacts →
	Exact match “Marino Tech Services have been an active provider in the maritime software space over the past 25 years with the rich legacy of delivering innovative ship management solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Marine Electrical Engineering LTD	Exact match	Aberdeen, United KingdomHQ recorded Sep 28, 2026	11-50	15 contacts →
	Exact match “We are an independent marine electrical engineering company recognised for our expertise within the marine industry providing bespoke and flexible engineering solutions across…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Furuno UK Limited	Exact match	Hampshire, United KingdomHQ recorded Sep 28, 2026	11-50	14 contacts →
	Exact match “FURUNO (UK) LIMITED is a business supplies and equipment company based out of WEST BUILDING, PENNER ROAD HAVANT, HAMPSHIRE, United Kingdom.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Tymor Marine	Exact match	Aberdeen, United KingdomHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Tymor Marine is a naval architecture and marine engineering consultancy headquartered in Aberdeen, with offices in Glasgow and Lafayette.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Oceanix International	Exact match	Surrey, United KingdomHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Oceanix International is a go-to partner for all maritime bridge equipment and maintenance requirements.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Hatlapa Marine Equipment	Exact match	Bournemouth, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	13 contacts →
	Exact match “In October 2013, MacGregor acquired Hatlapa to strengthen its position in the merchant shipping segment with a product portfolio that contained a wide range of deck machinery.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	AMI Marine LTD	Exact match	Southampton, United KingdomHQ recorded Sep 28, 2026	11-50	12 contacts →
	Exact match “Welcome to AMI Marine AMI specialise in Bridge Safety and Navigation Systems Products - Voyage Data Recorders - Ship Navigation - BNWAS - Course Recorders - Interfacing - Test…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Charity & Taylor, The UK Division Of Aage Hempel Group	Exact match	Great Yarmouth, United KingdomHQ recorded Sep 28, 2026	1-10	11 contacts →
	Exact match “At Charity & Taylor, our purpose is simple: to keep vessels operating safely, efficiently, and without surprises.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “marine system software developers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 137 marine system software developers based in the United Kingdom

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Marine system software developers based in the United Kingdom at a glance

As of Sep 28, 2026

27.8%Verified-email coverage

20.6Average contacts per company

1-10Median size (employees)

11.7%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 137 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “marine system software developers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 784 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “marine system software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine system software developers are there based in the United Kingdom?

RevenueBase identified 137 company matches for marine system software developers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SDSD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most marine system software developers?

London leads with 16 company records, followed by Poole (6) and Southampton (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 784 professional contacts with verified work emails tracked across these 137 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 SmartSearch, 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.