Company lists · Data refreshed September 2026

Top 23 Offshore support vessel operators based in Canada

RevenueBase identified 53 company matches for offshore support vessel operators associated with Canada as of September 2026 and tracks 4,251 professional contacts across them, including 1,104 with verified work emails. Dartmouth is the largest hub.

This list covers company matches for offshore support vessel operators associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
53Companies
4,251Contacts tracked
1,104Verified emails
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The 23 largest offshore support vessel operators based in Canada

Ranked by team size
Top 23 of 53 company matches for offshore support vessel operators based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVancouver, BC, CanadaHQ recorded Sep 20, 20261,001-5,0002,319 contacts →

Exact match

“Teekay is a leading provider of international crude oil marine transportation services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchMontreal, QC, CanadaHQ recorded Sep 20, 20261,001-5,000396 contacts →

Exact match

“The CSL Group Inc.(“CSL”) of Montreal, Canada is a world-leading provider of marine dry bulk cargo handling and delivery services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchQuébec, QC, CanadaHQ recorded Sep 20, 2026501-1,000351 contacts →

Exact match

“Harbour Towing | Shipyard | Ship Repairs | Naval Construction | Equipement Rental | Floating wharves | Barge and Worboat Rental | Salvage | Marine Transportation | Dredging Ocean…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchBurlington, ON, CanadaHQ recorded Sep 20, 2026201-500225 contacts →

Exact match

“Operating in the maritime sector in Canada since 1956, McKeil Marine takes great pride in the tradition of providing our customers with innovative marine solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchSaint John, NB, CanadaHQ recorded Sep 20, 2026501-1,000194 contacts →

Exact match

“Atlantic Towing is a leading provider of Offshore Supply, Port and Coastal marine services, operating in the North Atlantic, South Atlantic, Arctic and Pacific Coastal regions, as…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchQuébec, QC, CanadaHQ recorded Sep 20, 20261,001-5,000171 contacts →

Exact match

“Desgagnés is a Quebec group reputed for the excellence of its maritime and land operations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchParadise, NL, CanadaHQ recorded Sep 20, 2026201-50073 contacts →

Exact match

“We are a Ship Management and crewing company operating and managing DP shuttle tankers, harbour tugs, bulk carrier, cargo vessel, oceangoing tug and barge, pilot boats and product…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchSt John’s, NL, CanadaHQ recorded Sep 20, 2026201-50064 contacts →

Exact match

“Reliance Offshore is the offshore & marine personnel subsidiary of the I.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchDartmouth, NS, CanadaHQ recorded Sep 20, 202651-20055 contacts →

Exact match

“Siem Offshore manages a harsh-weather fleet of offshore support vessels servicing major offshore energy companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchFort Saskatchewan, AB, CanadaHQ recorded Sep 20, 202651-20052 contacts →

Exact match

“Canada Pump & Power is a leading provider of industrial marine services and products, specializing in four core areas: DIVE – PUMP – BARGE – DREDGE.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchDartmouth, NS, CanadaHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“We own and operate a fleet of vessels, and coordinate operations to support our clients in the acquisition of ocean data.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchNorth Vancouver, BC, CanadaHQ recorded Sep 20, 202651-20026 contacts →

Exact match

“Canpac Marine Services Inc, is based in the Port of Vancouver, Canada and has been providing marine services to inland, coastal, and offshore sectors since 1965.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchVictoria, BC, CanadaHQ recorded Sep 20, 202611-5024 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchDartmouth, NS, CanadaHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“Founded in 1969, Dominion Diving Limited has advanced to become the largest professional diving, ROV and subsea services company in Canada.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchSt. John's, NL, CanadaHQ recorded Sep 20, 2026201-50010 contacts →

Exact match

“Seabase Newfoundland Limited - Where Expectations Meet Excellence.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchRepentigny, QC, CanadaHQ recorded Sep 20, 20261-107 contacts →

Exact match

“DERA Maritime is your "One Stop for All your Needs" in the fast paced environment of the marine industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchNorth Vancouver, BC, CanadaHQ recorded Sep 20, 202611-506 contacts →

Exact match

“Three Branch Supply is a Marine Supplies and Service Company based out of 1516 Columbia St, North Vancouver, British Columbia, Canada.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchDartmouth, NS, CanadaHQ recorded Sep 20, 202651-2005 contacts →

Exact match

“KOTUG Canada offers a broad range of towage and maritime services across Canada, bringing together the combined experiences, expertise, and best practices, of two industry-leading…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchSaguenay, QC, CanadaHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Groupe Riverin Maritime, spécialisé en transport maritime et en travaux maritimes, location de barges de rivières, plongeurs, scaphandriers, inspection et travaux sous-marins”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchMahone Bay, NS, CanadaHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Full service marine provider with a fleet of capable vessels ready to take on any project.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchSurrey, BC, CanadaHQ recorded Sep 20, 202651-2003 contacts →

Exact match

“BROSTAR was founded to provide various Oil and Gas services, ranging from Subsea Engineering, Subsea Inspection, Offshore Vessel to Procurements, Rovs and Diving services within…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchPort Stanley, ON, CanadaHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Orange Force Marine is a capable marine service company that provides flexible, reliable, efficient vessels & equipment, combining professional crew, highly experienced management…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchDartmouth, NS, CanadaHQ recorded Sep 20, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 23 of 53 offshore support vessel operators based in Canada

See the full list, filter by size, metro and specialty, and access 1,104 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore support vessel operators based in Canada at a glance

As of Sep 20, 2026
26.0%Verified-email coverage
80.2Average contacts per company
11-50Median size (employees)
15.1%Largest-city concentration · Dartmouth
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
12
51-200
9
201-500
5
501-1,000
2
1,001-5,000
3

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 53 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with Canada whose business descriptions match “offshore support vessel operators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,104 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offshore support vessel operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore support vessel operators are there based in Canada?

RevenueBase identified 53 company matches for offshore support vessel operators associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Teekay tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore support vessel operators?

Dartmouth leads with 8 company records, followed by Quebec (4) and Montreal (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,104 professional contacts with verified work emails tracked across these 53 companies; direct dials are available where recorded.

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 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.