Company lists · Data refreshed September 2026
Top 25 Maritime defense contractors worldwide
RevenueBase identified 120 maritime defense contractors worldwide as of September 2026 and tracks 23,550 professional contacts across them, including 2,376 with verified work emails and 0 with mobile numbers. The United States is the largest market and Henderson the largest hub.
This list covers maritime defense contractors 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 17, 2026. Country and city lists for maritime defense contractors 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 maritime defense contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,318 contacts → | ||||
Indirect evidence “General Dynamics Electric Boat is a business unit of General Dynamics with headquarters in Groton, CT.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,342 contacts → | ||||
Indirect evidence “We serve those who protect our freedom.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,801 contacts → | ||||
Indirect evidence “ASC Pty Ltd has proudly served as Australia’s submarine builder and sustainer for almost 40 years.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,430 contacts → | ||||
Strong evidence “Austal is an Australian shipbuilder and global defence prime contractor which designs, constructs and sustains some of the world’s most advanced commercial and defence vessels.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 853 contacts → | ||||
Indirect evidence “Bollinger Shipyards is the leading provider of quality new construction, repair and conversion products and services to both the military and commercial marine industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 679 contacts → | ||||
Partial evidence “Fairbanks Morse Defense (FMD) is the leading provider of the highest value equipment for naval defense customers.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 357 contacts → | ||||
Indirect evidence “Founded in 1994 as a small, diversified professional services company, Delphinus today employs more than 650 professional and technical personnel supporting a customer base that…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 252 contacts → | ||||
Indirect evidence “Navantia Australia is generating sovereign naval design and sustainment capability for Australia.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 173 contacts → | ||||
Indirect evidence “MIKEL was founded in to develop and deliver innovative technologies to the U.S.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 138 contacts → | ||||
Strong evidence “Patriot Maritime is a leading maritime contractor to the U.S.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 135 contacts → | ||||
Partial evidence “ThayerMahan is leading a transformation in how maritime solutions are delivered, sustained, and scaled.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 130 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 107 contacts → | ||||
Strong evidence “Swiftships is an ISO 9001 certified, USA shipbuilder, and global defense contractor which offers end-to-end engineering, shipbuilding, testing, and delivery services for new…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 97 contacts → | ||||
Partial evidence “L3 KEO employs a full spectrum of engineering and manufacturing disciplines to design and build sensor systems for submarines, surface ships, combat vehicles, and other defense…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 75 contacts → | ||||
Strong evidence “Bastion Defence Consulting is a premier maritime professional services consulting firm providing a broad range of services across Australia to a number of clients in the Defence…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 75 contacts → | ||||
Indirect evidence “Incat Crowther is a diversified marine design business with offices in Sydney, Australia, Lafayette, Louisiana, USA and Romsey, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 70 contacts → | ||||
Partial evidence “Norship is a diversified marine services business that delivers sustainment, engineering and manufacturing services to highly valued Defence, Commercial and Private sector…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 65 contacts → | ||||
Partial evidence “Maritime Security Services.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 62 contacts → | ||||
Partial evidence “With more than 40 years of ship repair excellence, Vigor Marine CM San Diego (VMG CMSD) – formerly known as Continental Maritime of San Diego (CMSD) – stands as a vital force on…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 59 contacts → | ||||
Indirect evidence “Cardinal Engineering provides world-class marine engineering services to the US Navy, industry partners, and other US government agencies.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 53 contacts → | ||||
Partial evidence “Seasats builds long-endurance autonomous surface vessels for defense, commercial, and scientific missions.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 53 contacts → | ||||
Indirect evidence “Our Purpose: We are committed to providing safe, quality and process-driven services for Federal and Commercial customers in the ship repair and new ship construction…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 50 contacts → | ||||
Indirect evidence “International Systems Management Corp.(ISM) is a minority owned small business founded in January 2003 with expertise in the management of combat system and weapon system programs…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 47 contacts → | ||||
Partial evidence “Hydrasearch Company, LLC (Stevensville, MD) has been an established leader in manufacturing components and hardware for the maritime industry since 1962.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 46 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 17, 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: maritime defense contractors. 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 maritime defense contractors.
- Partial evidence
- Its own public description names part of maritime defense contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name maritime defense contractors. 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 120 maritime defense contractors worldwide
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Maritime defense contractors worldwide at a glance
As of Sep 17, 2026Companies by employee count
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 defense contractors, 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
- 2 countries, largest first: the United States, Australia. Country and city lists for maritime defense contractors are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “maritime defense contractors”. 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 maritime defense contractors), 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 maritime defense contractors, 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, 2,376 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 17, 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 defense contractors by location
2 lists · largest firstEvery Maritime defense contractors 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 maritime defense contractors, 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 maritime defense contractors are there worldwide?
RevenueBase identified 120 maritime defense contractors 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?
General Dynamics Electric Boat, headquartered in Groton, tops this list with the largest team on record.
Which country has the most maritime defense contractors?
The United States leads with 95 companies, followed by Australia (25). Every maritime defense contractors list by country and city is linked on this page.
Which city has the most maritime defense contractors?
Henderson leads with 5 headquartered companies, followed by San Diego (5) and Virginia Beach (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 2,376 verified decision-maker contacts tracked across these 120 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 17, 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.