- Hyperbaric Consult ApS
 - Services include: consulting, deep diving, tunnelling, hyperbaric oxygen and medical management, and inspections. - K.D. Marine Ltd
- Offshore diving contractors supporting the oil and gas industry.
- Northern Underwater Systems Ltd.
- Pumping systems for sale or rent, commercial diving, dredging, and dragline services, and barge rentals.
- Specialty Diving, Inc.
- Commercial inland and offshore divers. Services include inspections, maintenance and repairs, and a range of underwater and topside services.
- Lake Shore Towing
- Provides towing, salvage recovery, and commercial diving services on Lake Erie.
- Solomon Diving, Inc.
- Offers commercial diving services to marine contractors, municipaliites, and other dive contractors. Also specialises in Zebra Mussel control.
- Blackledge Diving
- Providing underwater construction, inspection, repair, welding, and more.
- S & J Diving, Inc.
- Providing service to the marine industry, offshore and inland.
- Divers Worldwide
- Fee-based directory which allows divers, contractors, and suppliers to market themselves worldwide.
- Logan Diving Inc.
- Servicing underwater installations from Nova Scotia to the Caribbean and Gulf of Mexico, including facilities from California to Florida.
- Great Lakes Diving Company
- Services for construction, repair, inspection, cleaning, and underwater removal.
- Unterwasser Service 'Hansa' GmbH
- International diving operations based in Port of Hamburg, equipped for commercial dive and salvage operations and inspections.
- Pro-Dive, Inc.
- Providing inspection, construction and salvage services.
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