| Manufacturer | Toll Free in USA | Phone Number |
| ACR | 800-432-0227 | 954-981-3333 |
| Apelco/Raytheon | 800-539-5539 | 603-647-7530 |
| Autohelm/Raytheon | 800-539-5539 | 603-647-7530 |
| B&G | N/A | 954-351-9810 |
| Benmar | 800-423-6627 | 714-540-5120 |
| Bose | 800-367-4008 | 508-879-7330 |
| Cap'n | 800-637-4020 | 207-942-4751 |
| Charles Industries | 800-458-4747 | 847-806-6300 |
| C-Map | 800-424-2627 | 508-477-8090 |
| Comnav | 800-428-0212 | 604-872-3000 |
| Cortex | 800-862-4761 | 613-782-2210 |
| Datamarine | 800-426-1330 | 425-771-2182 |
| Datron | 800-287-5052 | 805-584-1717 |
| Digital Antenna | N/A | 954-581-7007 |
| Echo Pilot | N/A | 804-722-4917 |
| Edson | N/A | 508-995-9711 |
| Flo Scan | 800-522-3610 | 206-524-6625 |
| Furuno | N/A | 360-834-9300 |
| Garmin | 800-800-1420 | 913-397-8200 |
| Globe Wireless | 800-876-7234 | 650-126-6588 |
| Heart | 800-446-6180 | 253-872-7225 |
| Icom | N/A | 425-454-8155 |
| Interphase | 800-777-6627 | 408-477-4944 |
| JRC | N/A | 206-654-5644 |
| KVH | N/A | 401-847-3327 |
| Laser Plot | 800-888-0888 | 508-757-2831 |
| Leica | 800-975-3422 | 310-791-5300 |
| Lowrance | 800-324-1356 | 918-437-6881 |
| Magellan | 800-669-4477 | 909-394-5000 |
| Maptec | 800-344-3314 | 978-933-3000 |
| Micrologic | N/A | 818-998-1216 |
| Navionics | 800-848-5896 | 508-291-6000 |
| NavPod | N/A | 949-515-1470 |
| Newmar | 800-854-3906 | 714-751-0488 |
| Nobletec | 800-495-6279 | 425-391-9131 |
| Northstar | 800-628-4487 | 978-897-6600 |
| Panasonic | 800-545-2672 | 770-518-6469 |
| Pinpoint | N/A | 516-288-0264 |
| Questus/Hood | N/A | 603-826-4117 |
| Raytheon | 800-539-5539 | 603-647-7530 |
| Resolution Mapping/ Maptec/BSB Charts | 800-344-3314 | 978-933-3000 |
| Ritchie Compass | N/A | 617-826-5131 |
| SEA | 800-426-1330 | 425-771-2182 |
| Shakespeare | 800-845-7750 | 803-276-5504 |
| Seatel | N/A | 925-798-7979 |
| Simrad | 800-426-5565 | 425-778-8821 |
| Sitex | 800-275-1902 | 813-576-5734 |
| Standard | 800-366-8431 | 310-532-5300 |
| Trimble | 800-487-4662 | 512-432-0400 |
| Westinghouse | 800-851-4807 | N/A |