Black Dog Divers’ welding and fabrication services are provided for customers and contractors at either their requested jobsites or at Black Dog Divers’ in-house facility in Portsmouth, NH.

Services include but are not limited to:
Pipe Welding, Burning, and Fabrication
Barge Fabrication and Repairs
Work Float Fabrication (Medium & Heavy Grade, various sizes available)
Underwater Welding and Burning - including Pile Jackets & Cathodic Protection
Trash Racks & Stop Log Fabrication, Installation, and Removal
Coffer Dam & Steel Sheet installation and removal
Pier & Ship Hull maintenance

Put our experience of more than 19 years to work for your projects!

We work with company-owned and operated equipment, and follow all OSHA safety and maintenance requirements.