| Business | Phone |
| Columbia-Sentinel Engineers 4000 Delridge Way Sw 300, Seattle 98106 | (206) 923-1380 |
| Bruce Culver 1441 N Northlake Way, Seattle 98103 | (206) 547-0484 |
| Elliott Bay Design Group 5305 Shilshole Ave Nw 100, Seattle 98107 | (206) 782-3082 |
| Richard W Etsell 1115 N Northlake Way, Seattle 98103 | (206) 545-1422 |
| Guido Perla & Assoc Inc 9010 E Marginal Way S 300, Seattle 98108 | (206) 768-1515 |
| Guido Perla & Assoc Inc 720 3rd Ave 1200, Seattle 98104 | (206) 382-3949 |
| Hage-Marine Inc 7114 31st Ave Sw, Seattle 98126 | (206) 938-0195 |
| Hal Hockema & Assoc 19502 34th Ave Ne, Seattle 98155 | (206) 365-0919 |
| Harbor Marine Group Inc 318 1st Ave S, Seattle 98104 | (206) 933-6579 |
| Headway Marine 2547 Perkins Ln W, Seattle 98199 | (206) 618-8632 |
| Glosten Associates Inc 1201 Western Ave 200, Seattle 98101 | (206) 624-7850 |
| Jensen Maritime Consultants 4241 21st Ave W 404, Seattle 98199 | (206) 284-1274 |