Company lists · Data refreshed September 2026
Top 25 Commercial diving training organizations worldwide
RevenueBase identified 3,021 commercial diving training organizations worldwide as of September 2026 and tracks 23,202 professional contacts across them, including 2,008 with verified work emails. The United States is the largest market and Barcelona the largest hub.
This list covers commercial diving training organizations 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 19, 2026. Country and city lists for commercial diving training organizations 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.
The 25 largest commercial diving training organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,423 contacts → | ||||
Partial evidence “PADI® (Professional Association of Diving Instructors®) is the world’s largest ocean exploration and diver organization, operating in 186 countries and territories, with a global…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 718 contacts → | ||||
Indirect evidence “Scuba Schools International (SSI) was established in 1970 with the vision of making it possible for anyone to learn how to dive safely.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 236 contacts → | ||||
Indirect evidence “Ballard Marine Construction (Ballard) is a specialty marine and underwater contractor.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 217 contacts → | ||||
Indirect evidence “Global is a leader in the marine services industry with decades of experience managing complex, critical and technical projects in and around the water.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 190 contacts → | ||||
Partial evidence “Since 1969, Underwater Construction Corporation (UCC) has been a leading provider of underwater services to commercial and government facilities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 183 contacts → | ||||
Indirect evidence “The National Association of Underwater Instructors (NAUI Worldwide) is a premier recreational dive certification and membership organization headquartered in Riverview, Florida…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 176 contacts → | ||||
Indirect evidence “Welcome to Subsea Global Solutions where EVERY DAY our goal is to deliver unrivaled service.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 170 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 130 contacts → | ||||
Indirect evidence “Diventures was founded in 2009, with one location in Omaha, Nebraska, and has expanded to eighteen locations across twelve states.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 118 contacts → | ||||
Indirect evidence “SUS specializes in underwater marine construction including bridges, dams, pipelines, intakes, outfalls, inspection services, piers and wharfs and other public safety and local…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 117 contacts → | ||||
Indirect evidence “Who Are We?” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 109 contacts → | ||||
Strong evidence “Solutions Above & Below the Waterline, Since 1949: Commercial Diving | Marine Construction | Crane Rental & Rigging Maritime Energy Utility Construction Ship Repair Engineering…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 105 contacts → | ||||
Partial evidence “Established in 1998, United Marine Training Center, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 104 contacts → | ||||
Indirect evidence “OSC Group – a forging of underwater innovation and engineering expertise.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 104 contacts → | ||||
Partial evidence “SEAPRO is one of the pioneer diving companies in Egypt as a Middle East Leader in the field of Marine works to provide highly specialized technical service to the Offshore oil &…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 96 contacts → | ||||
Indirect evidence “HIMT was established in 1998 by a Merchant Navy Chief Engineer.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 94 contacts → | ||||
Indirect evidence “DEEP is an international ocean engineering and technology company on a mission to make humans aquatic.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 93 contacts → | ||||
Indirect evidence “Scuba Dive Certification Body” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 84 contacts → | ||||
Indirect evidence “At Huish Outdoors, we've brought together the Best Brands in Dive to create the leading scuba and immersion technology company in the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 80 contacts → | ||||
Indirect evidence “We are DISA International.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Strong evidence “IANTD Is The World's Largest Scuba & Rebreather Diving Training Organization Of Open Water, Nitrox, Enriched Air (EANx), Overhead Environment, Cave, Wreck, Recreational…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 73 contacts → | ||||
Strong evidence “Scuba Diving International is a Scuba training and certification agency.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 67 contacts → | ||||
Partial evidence “The South African Maritime Training Academy (SAMTRA) is a Non-Profit Company offering Quality Maritime Training Solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 67 contacts → | ||||
Indirect evidence “A RCS Subaquática é uma empresa de mergulho e soluções subaquáticas, criada por engenheiros, técnicos e mergulhadores preocupados com a segurança nas operações de mergulho e com a…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 62 contacts → | ||||
Partial evidence “The Philippine Center for Advanced Maritime Simulation and Training, Inc.(PHILCAMSAT) was established on May 26, 1992.” Source: RevenueBase Database · checked Sep 19, 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: commercial diving training organizations. 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 commercial diving training organizations.
- Partial evidence
- Its own public description names part of commercial diving training organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name commercial diving training organizations. 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 3,021 commercial diving training organizations worldwide
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Commercial diving training organizations worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 commercial diving training organizations, 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 commercial diving training organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “commercial diving training organizations”. 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 commercial diving training organizations), 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 commercial diving training organizations, 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, 2,008 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 19, 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.
Commercial diving training organizations by location
10 lists · largest firstEvery Commercial diving training organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Commercial diving training organizations based in the United States694
- Commercial diving training organizations based in the United Kingdom175
- Commercial diving training organizations based in Spain155
- Commercial diving training organizations based in Australia103
- Commercial diving training organizations based in Canada92
- Commercial diving training organizations based in the Netherlands79
- Commercial diving training organizations based in India67
- Commercial diving training organizations based in Brazil59
- Commercial diving training organizations based in the United Arab Emirates42
- Commercial diving training organizations based in Norway27
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 commercial diving training organizations, 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 commercial diving training organizations are there worldwide?
RevenueBase identified 3,021 commercial diving training organizations 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?
PADI, headquartered in Rancho Santa Margarita, tops this list with the largest team on record.
Which country has the most commercial diving training organizations?
The United States leads with 694 companies, followed by the United Kingdom (175) and Spain (155). Every commercial diving training organizations list by country and city is linked on this page.
Which city has the most commercial diving training organizations?
Barcelona leads with 20 headquartered companies, followed by Dubai (16) and Istanbul (16).
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 2,008 verified decision-maker contacts tracked across these 3,021 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 19, 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.