Company lists · Data refreshed September 2026

Top 25 Marine engine conversion companies worldwide

RevenueBase identified 943 marine engine conversion companies worldwide as of September 2026 and tracks 6,191 professional contacts across them, including 1,572 with verified work emails. The United States is the largest market and Istanbul the largest hub.

This list covers marine engine conversion companies worldwide, 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 20, 2026. Country and city lists for marine engine conversion companies follow the table.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
943Companies
6,191Contacts tracked
1,572Verified emails
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The 25 largest marine engine conversion companies worldwide

Ranked by team size
Top 25 of 943 marine engine conversion companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine engine conversion companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDubai, United Arab EmiratesHQ checked Sep 20, 20261,001-5,000376 contacts →

Indirect evidence

“Goltens is a service organization that enables shipowners and power plant operators all over the world to minimize asset downtime via diesel services, in-situ machining and BWT…”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceFrederikshavn, DenmarkHQ checked Sep 20, 2026201-500230 contacts →

Indirect evidence

“VMS Group is now part of Hoyer VMS Group.”

Source: RevenueBase Database · checked Sep 20, 2026
3Strong evidenceCassis, FranceHQ checked Sep 20, 202651-200178 contacts →

Strong evidence

“For 100 years, Moteurs Baudouin has manufactured the highest quality engines for marine and power generation applications.”

Source: RevenueBase Database · checked Sep 20, 2026
4Partial evidenceNavi Mumbai, IndiaHQ checked Sep 20, 202651-20086 contacts →

Partial evidence

“Spare parts and maintenance services for 4-stroke high-speed and medium-speed engines as well as propulsion systems & reliability solutions for all types of 2/4 Stroke, Inline/V…”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceCoventry, United KingdomHQ checked Sep 20, 202651-20084 contacts →

Partial evidence

“Caudwell Marine was founded to bring a new standard of diesel outboard technology to the marine industry.”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceShoreham By Sea, United KingdomHQ checked Sep 20, 202651-20078 contacts →

Partial evidence

“As the manufacturer of the only purpose-built high-powered diesel outboard, we are working to power the global marine industry through sustainable innovation, applying alternative…”

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceCovington, LA, United StatesHQ checked Sep 20, 202651-20077 contacts →

Partial evidence

Marine operators often struggle with costly downtime and performance issues.”

Source: RevenueBase Database · checked Sep 20, 2026
8Strong evidenceNewcastle Upon Tyne, United KingdomHQ checked Sep 20, 202651-20068 contacts →

Strong evidence

“Royston are a dynamic and expanding diesel engine supply, service and repair company operating successfully within the marine, offshore, industrial, defence and rail sectors for…”

Source: RevenueBase Database · checked Sep 20, 2026
9Partial evidenceRavenstein, NetherlandsHQ checked Sep 20, 202611-5055 contacts →

Partial evidence

“NPS Driven is a value adding reseller of renowned brands for off-highway and marine applications.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceColchester, United KingdomHQ checked Sep 20, 202651-20054 contacts →

Indirect evidence

“Providing Safety through Mechanical Excellence.”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 20, 202651-20054 contacts →

Indirect evidence

“We’re Reviva.”

Source: RevenueBase Database · checked Sep 20, 2026
12Partial evidenceSteyr, AustriaHQ checked Sep 20, 202651-20053 contacts →

Partial evidence

“Steyr Motors AG combines profound engine design expertise with vast operational experience to provide a full life-cycle support to our clients.”

Source: RevenueBase Database · checked Sep 20, 2026
13Strong evidenceÄngelholm, SwedenHQ checked Sep 20, 202651-20052 contacts →

Strong evidence

“OXE Marine is the company behind the world’s first high-performance diesel outboard engine, the OXE Diesel, setting new standards for durability, fuel efficiency and low emissions.”

Source: RevenueBase Database · checked Sep 20, 2026
14Strong evidenceClearwater, FL, United StatesHQ checked Sep 20, 202651-20050 contacts →

Strong evidence

“Mastry Engine Center has achieved its reputation as the team to turn to when faced with challenging marine diesel powertrain applications and installations, providing solutions…”

Source: RevenueBase Database · checked Sep 20, 2026
15Strong evidenceMartorell, SpainHQ checked Sep 20, 202651-20048 contacts →

Strong evidence

“Solé Advance: Marine Engines and Onboard Electrical Power solutions Reimagining the future of the sea, Solé Advance specializes in the most advanced technology in marine engines…”

Source: RevenueBase Database · checked Sep 20, 2026
16Partial evidenceLa Teste-de-buch, FranceHQ checked Sep 20, 202611-5046 contacts →

Partial evidence

“BlueNav develops innovative solutions that convert any boat normally propelled by combustion engines, into a hybrid electric boat.”

Source: RevenueBase Database · checked Sep 20, 2026
17Partial evidenceMiami, FL, United StatesHQ checked Sep 20, 202611-5045 contacts →

Partial evidence

“Established in 1981, Marinsa International Inc, has become a leading supplier of Medium Speed Diesel propulsion for Tug Boats, Supply Vessels, Tuna and Sardine Purse Seiners as…”

Source: RevenueBase Database · checked Sep 20, 2026
18Indirect evidenceUnited StatesHQ checked Sep 20, 2026n/a42 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceDenver, CO, United StatesHQ checked Sep 20, 202611-5040 contacts →

Indirect evidence

“We have been family owned and operated since 1970.”

Source: RevenueBase Database · checked Sep 20, 2026
20Partial evidenceAqaba, JordanHQ checked Sep 20, 2026201-50040 contacts →

Partial evidence

“At BADR Marine, we take marine care to new heights.”

Source: RevenueBase Database · checked Sep 20, 2026
21Partial evidenceHendrik-ido-ambacht, NetherlandsHQ checked Sep 20, 202651-20037 contacts →

Partial evidence

“Koedood Marine Group is gespecialiseerd in scheepsmotoren.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceUnited StatesHQ checked Sep 20, 2026201-50035 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
23Partial evidenceMariehamn, Aland IslandsHQ checked Sep 20, 202651-20033 contacts →

Partial evidence

“Refit, Conversions & New Buildingings for all types of vessels, Crusie ships, Ferries, Merchant and offshore.”

Source: RevenueBase Database · checked Sep 20, 2026
24Strong evidenceSouthampton, United KingdomHQ checked Sep 20, 202611-5033 contacts →

Strong evidence

“PB ASHER Ltd specialise in the reconditioning, supply and exchange of Marine, Commercial and Industrial engine components such as Cylinder Heads, Liners, Pistons, Con Rods, Fuel…”

Source: RevenueBase Database · checked Sep 20, 2026
25Strong evidenceBugis, SingaporeHQ checked Sep 20, 202611-5033 contacts →

Strong evidence

“HSM Marine Engineering Pte Ltd - Incorporated in Singapore with a prime objective to provide total solutions to the ship owners / managers on main propulsion as well as power…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 943 marine engine conversion companies worldwide

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Marine engine conversion companies worldwide at a glance

As of Sep 20, 2026
25.4%Verified-email coverage
6.6Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · Istanbul
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
487
11-50
330
51-200
99
201-500
10
501-1,000
1
1,001-5,000
1

Email recency is reported on each country list linked below.

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 engine conversion 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.
Coverage
Every country. Country and city lists for marine engine conversion companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “marine engine conversion 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 engine conversion 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 engine conversion companies, and records with no verified work email.
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, 1,572 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 20, 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 engine conversion companies by location

6 lists · largest first

Every Marine engine conversion companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 engine conversion 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 engine conversion companies are there worldwide?

RevenueBase identified 943 marine engine conversion companies worldwide 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?

Goltens Worldwide, headquartered in Dubai, tops this list with the largest team on record.

Which country has the most marine engine conversion companies?

The United States leads with 256 companies, followed by the United Kingdom (75) and the Netherlands (57). Every marine engine conversion companies list by country and city is linked on this page.

Which city has the most marine engine conversion companies?

Istanbul leads with 19 headquartered companies, followed by Singapore (16) and Fort Lauderdale (12).

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 1,572 verified decision-maker contacts tracked across these 943 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 20, 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.