| Business | Phone |
| Zurn Yacht Design 89 Front St, Marblehead 1945 | (781) 639-0678 |
| Dieter Empacher Inc 75 Evans Rd, Marblehead 1945 | (781) 631-5705 |
| Propulsion Data Svc Inc 38 Tioga Way, Marblehead 1945 | (781) 631-8020 |
| Jim Taylor Yacht Designs 67 Front St # B, Marblehead 1945 | (781) 631-6235 |