Company lists · Data refreshed September 2026

Top 25 Maritime compliance software companies based in the United Kingdom

Name: Maritime compliance software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 136 companies tracked

RevenueBase identified 136 maritime compliance software companies headquartered in the United Kingdom as of September 2026 and tracks 2,938 professional contacts across them, including 830 with verified work emails and 151 with mobile numbers. London is the largest hub.

This list covers maritime compliance 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

136Companies

2,938Contacts tracked

830Verified emails

151Mobile numbers

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The 25 largest maritime compliance software companies based in the United Kingdom

Ranked by team size

Top 25 of 136 maritime compliance software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names maritime compliance software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SDSDStrong evidence	London, United KingdomHQ checked Sep 5, 2026	n/a	681
	“SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Source: company website · checked Sep 5, 2026
2	OneoceanPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	295
	“Welcome to OneOcean: the ocean’s digital ecosystem and trusted partner for maritime businesses worldwide.” Source: company website · checked Sep 5, 2026
3	Sperry MarinePartial evidence	New Malden, United KingdomHQ checked Sep 5, 2026	201-500	279
	“Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Source: company website · checked Sep 5, 2026
4	James Fisher FendercarePartial evidence	Norwich, United KingdomHQ checked Sep 5, 2026	1,001-5,000	204
	“Shaping the future of maritime.” Source: company website · checked Sep 5, 2026
5	Ninety Percent Of Everything 90poePartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	161
	“Creating clarity, control and confidence for modern maritime operations with OpenOcean STUDIO.” Source: company website · checked Sep 5, 2026
6	SEAStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	146
	“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: company website · checked Sep 5, 2026
7	SpectecStrong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	113
	“SpecTec is a market-leading maritime technology company specialising in asset management software.” Source: company website · checked Sep 5, 2026
8	SeebyteStrong evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	51-200	81
	“SeeByte provides clients in the global maritime industry with the most advanced software solutions to enhance the capabilities of their uncrewed systems.” Source: company website · checked Sep 5, 2026
9	Ulysses SystemsPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	78
	“Ulysses Systems is a leading marine industry provider of enterprise software.” Source: company website · checked Sep 5, 2026
10	Martek Marine LTDIndirect evidence	Rotherham, United KingdomHQ checked Sep 5, 2026	51-200	70
	“For over 25 years, Martek Marine has delivered disruptive marine technology that keeps crews safe, optimises vessel performance, and supports sustainable operations at sea.” Source: company website · checked Sep 5, 2026
11	IDWALIndirect evidence	Cardiff, United KingdomHQ checked Sep 5, 2026	501-1,000	57
	“IDWAL is the ship inspection, technology and data business.” Source: company website · checked Sep 5, 2026
12	MIS MarineIndirect evidence	Birmingham, United KingdomHQ checked Sep 5, 2026	51-200	40
	“As the industry-leading, global provider of Marine Assurance products and solutions for the shipping and energy sectors, we are committed to providing quality systems and…” Source: company website · checked Sep 5, 2026
13	MARLOPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	36
	“Marlo is a maritime ERP platform built exclusively for the shipping industry-helping vessel owners, operators, and commercial managers run their entire business from one system.” Source: company website · checked Sep 5, 2026
14	GtmaritimePartial evidence	Warrington, United KingdomHQ checked Sep 5, 2026	11-50	35
	“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…” Source: company website · checked Sep 5, 2026
15	Clearwater DynamicsIndirect evidence	Poole, United KingdomHQ checked Sep 5, 2026	11-50	24
	“Clearwater Dynamics delivers industry‑leading technology solutions specialising in IoT connectivity, vessel tracking, and risk‑mitigation.” Source: company website · checked Sep 5, 2026
16	Sirm UK Marine LTDIndirect evidence	Chelmsford, United KingdomHQ checked Sep 5, 2026	51-200	22
	“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…” Source: company website · checked Sep 5, 2026
17	Chersoft LTDIndirect evidence	Sheffield, United KingdomHQ checked Sep 5, 2026	11-50	22
	“CHERSOFT design high quality marine data management solutions.” Source: company website · checked Sep 5, 2026
18	Marino Tech ServicesStrong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	19
	“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.” Source: company website · checked Sep 5, 2026
19	Marico Marine GroupPartial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	11-50	14
	“Marico Marine is an independent maritime consultancy based in the UK and New Zealand with ocean safety, security and environmental protection at the very heart of what we do.” Source: company website · checked Sep 5, 2026
20	Tymor MarineIndirect evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	11-50	13
	“Tymor Marine is a naval architecture and marine engineering consultancy headquartered in Aberdeen, with offices in Glasgow and Lafayette.” Source: company website · checked Sep 5, 2026
21	Charity & Taylor, The UK Division Of Aage Hempel GroupIndirect evidence	Great Yarmouth, United KingdomHQ checked Sep 5, 2026	1-10	11
	“At Charity & Taylor, our purpose is simple: to keep vessels operating safely, efficiently, and without surprises.” Source: company website · checked Sep 5, 2026
22	FluechemIndirect evidence	York, United KingdomHQ checked Sep 5, 2026	11-50	11
	“Fluechem is a global leader in the environmental transformation of the shipping industry.” Source: company website · checked Sep 5, 2026
23	Novaco NavigationIndirect evidence	Bristol, United KingdomHQ checked Sep 5, 2026	11-50	11
	“Novaco Navigation is a leading provider of navigational tracking data, services, and products for ships and commercial shipping companies.” Source: company website · checked Sep 5, 2026
24	Safety At SEA LTDIndirect evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	1-10	8
	Source: company website · checked Sep 5, 2026
25	Dean & Waters LTDIndirect evidence	West Sussex, United KingdomHQ checked Sep 5, 2026	1-10	8
	“The concept and drive behind Dean & Waters Marine Management is to provide a bespoke support service to our Owners, Captains and Crew, without any additional agenda.” Source: company website · checked Sep 5, 2026

Showing 25 of 136 maritime compliance software companies based in the United Kingdom

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Maritime compliance software companies based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 35 HQs

151Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

781

31–60

61–90

90–180

180+

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 maritime compliance software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “maritime compliance software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among maritime compliance 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 an evidence 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, 830 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 5, 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.

Maritime compliance software companies by metro

Maritime compliance software companies in London35

Frequently asked

How many maritime compliance software companies are there based in the United Kingdom?

RevenueBase identified 136 maritime compliance 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 maritime compliance software companies?

London leads with 35 headquartered companies, followed by Liverpool (5) and Glasgow (4).

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 830 verified decision-maker contacts tracked across these 136 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 5, 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.