Company lists · Data refreshed September 2026
Top 25 Underwater communication systems worldwide
RevenueBase identified 236 underwater communication systems worldwide as of September 2026 and tracks 7,240 professional contacts across them, including 2,178 with verified work emails. The United States is the largest market and Trondheim the largest hub.
This list covers underwater communication systems 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 22, 2026. Country and city lists for underwater communication systems 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 underwater communication systems worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,140 contacts → | ||||
Partial evidence “Alcatel Submarine Networks, leads the industry in terms of transmission capacity and installed base with more than km of optical submarine systems deployed worldwide (enough to…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 306 contacts → | ||||
Partial evidence “Kraken Robotics is a global marine technology company transforming subsea intelligence through advanced sensors, software, and integrated systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 290 contacts → | ||||
Partial evidence “The MacArtney Group supplies products and engineering solutions to the worldwide Underwater Technology Market.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 288 contacts → | ||||
Indirect evidence “Formerly Elcome Marine Services Pvt.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 273 contacts → | ||||
Partial evidence “Underwater innovations for energy, defence and science.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 204 contacts → | ||||
Strong evidence “We develop and manufacture state-of-the-art communication products and systems for air, land, and sea applications worldwide.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 150 contacts → | ||||
Strong evidence “SAES, as a company specialised in underwater acoustics, has 100 highly skilled engineers and scientists and over 25 years’ experience in sonar systems, on-board systems, mine…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 139 contacts → | ||||
Partial evidence “Founded in 2015, ALSEAMAR, a subsidiary of the ALCEN Group, develops, designs, operates and maintains high-performance underwater solutions that meet the requirements of…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 105 contacts → | ||||
Strong evidence “Norbit Subsea is a supplier of underwater instrumentation and communication solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 92 contacts → | ||||
Partial evidence “ELAC SONAR has 100 year of experience in the design, manufacture and supply of hydroacoustic systems for naval applications.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 91 contacts → | ||||
Indirect evidence “ARMELSAN DEFENCE TECHNOLOGIES Inc.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 88 contacts → | ||||
Indirect evidence “EvoLogics GmbH is a German-based high-tech enterprise.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 86 contacts → | ||||
Indirect evidence “EyeROV (IROV Technologies Pvt.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 69 contacts → | ||||
Strong evidence “WSENSE is a spin-off of Sapienza University of Rome, with a strong and experienced R&D team specialized in monitoring and communication systems with pioneering patented solutions…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 65 contacts → | ||||
Indirect evidence “VideoRay is now an AV company!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “Since beginning operation in 1973, Sonatech, Inc.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 50 contacts → | ||||
Partial evidence “EdgeTech is a leading manufacturer of underwater technology solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 41 contacts → | ||||
Partial evidence “Coda Octopus is a global leader and specialist in underwater technologies including being the patent holder for the real-time 3D sonar, the Echoscope®.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 41 contacts → | ||||
Indirect evidence “Welcome to the official channel of GABLER Naval.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 39 contacts → | ||||
Indirect evidence “ENL is the largest marine electronic company in New Zealand that has earned a solid reputation for genuine service, innovation and supplying quality marine electronic products…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Indirect evidence “Since the foundation of the ocean survey technology in UST21 has been growing as a global company leading the international standards of the ocean data beyond South Korea through…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 36 contacts → | ||||
Partial evidence “We solve the defence challenges of today and tomorrow, enabling navies to dominate the underwater battlespace through next generation situational awareness technology.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 33 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 33 contacts → | ||||
Strong evidence “Water Linked was founded in Trondheim in 2013 with the vision of becoming a world leader in high-end acoustic subsea communication and positioning systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 33 contacts → | ||||
Strong evidence “Klein Marine Systems is a leading provider of advanced sonar systems, underwater technology, and marine data solutions.” Source: RevenueBase Database · checked Sep 22, 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: underwater communication systems. 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 underwater communication systems.
- Partial evidence
- Its own public description names part of underwater communication systems, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name underwater communication systems. 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 236 underwater communication systems worldwide
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Underwater communication systems worldwide at a glance
As of Sep 22, 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 underwater communication systems, 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 underwater communication systems are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “underwater communication systems”. 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 underwater communication systems), 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 underwater communication systems, 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, 2,178 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 22, 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.
Underwater communication systems by location
2 lists · largest firstEvery Underwater communication systems 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 underwater communication systems, 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 underwater communication systems are there worldwide?
RevenueBase identified 236 underwater communication systems 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?
ASN, headquartered in Les Ulis, tops this list with the largest team on record.
Which country has the most underwater communication systems?
The United States leads with 44 companies, followed by the United Kingdom (29). Every underwater communication systems list by country and city is linked on this page.
Which city has the most underwater communication systems?
Trondheim leads with 5 headquartered companies, followed by Halifax (4) and Aberdeen (3).
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 2,178 verified decision-maker contacts tracked across these 236 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 22, 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.