| Name | Relationship | Activity | State | EIN |
|---|---|---|---|---|
| Northwest Marine Trade Association | Related tax-exempt org | Controlling industry ORG/contributing employer | WA | 910665671 |
| HAT Island Community Association | Related tax-exempt org | Contributing employer | — | — |
| Manufacturing Industrial Council of Seattle | Related tax-exempt org | Contributing employer | — | — |
| Northwest Maritime Advisory Services | Related tax-exempt org | Contributing employer | — | — |
| Northwest Maritime Center | Related tax-exempt org | Contributing employer | — | — |
| PORT of Anacortes | Related tax-exempt org | Contributing employer | — | — |
| The Center for Wooden Boats | Related tax-exempt org | Contributing employer | — | — |
| The Olympia Yacht Club | Related tax-exempt org | Contributing employer | — | — |
| Armour Industries LLC | Related partnership | Contributing employer | — | — |
| Atech Services LLC | Related partnership | Contributing employer | — | — |
| Azabu Five LLC | Related partnership | Contributing employer | — | — |
| BAY Head Marina LLC | Related partnership | Contributing employer | — | — |
| Bjornson Motors LLC | Related partnership | Contributing employer | — | — |
| BOAT Supplies LLC | Related partnership | Contributing employer | — | — |
| Bristol Wave Seafoods LLC | Related partnership | Contributing employer | — | — |
| Coastal AMX Marine LLC | Related partnership | Contributing employer | — | — |
| Dagmars Marina LLC | Related partnership | Contributing employer | — | — |
| Defiance Boats LLC | Related partnership | Contributing employer | — | — |
| Defiance Marine LLC | Related partnership | Contributing employer | — | — |
| EK Projects LLC | Related partnership | Contributing employer | — | — |
| Endor Marine LLC | Related partnership | Contributing employer | — | — |
| Fast Sails LLC | Related partnership | Contributing employer | — | — |
| Fathom Marine Services LLC | Related partnership | Contributing employer | — | — |
| Fluid Motion LLC | Related partnership | Contributing employer | — | — |
| Haven Boatworks LLC | Related partnership | Contributing employer | — | — |