| Business | Phone |
| Crofton Diving Corp 16 Harper Rd, Portsmouth 23707 | (757) 397-1131 |
| Dominion Marine Corp 801 Broad St, Portsmouth 23707 | (757) 397-1243 |
| G-1 Mechanical Inc 800 Loudoun Ave, Portsmouth 23707 | (757) 391-0277 |
| H & H Enterprises 3623 Shipwright St, Portsmouth 23703 | (757) 484-0308 |
| Inlet Marine 475 Water St, Portsmouth 23704 | (757) 397-2526 |
| International Maring & Ind Svc 4013 Seaboard Ct, Portsmouth 23701 | (757) 405-0037 |
| Mac Gregor Usa Inc 3965 Burtons Point Rd, Portsmouth 23704 | (757) 399-1476 |
| Marine Recovery Svc 3301 Ballard Ave, Portsmouth 23701 | (757) 465-7900 |
| W F Magann Corp 3220 Mariner Ave, Portsmouth 23703 | (757) 484-2820 |
| Weeks Marine 4400 Coast Guard Blvd C, Portsmouth 23703 | (757) 483-3756 |
| Weeks Marine Inc 4049 Cedar Ln, Portsmouth 23703 | (757) 638-2901 |