Simrad NAC-D Autopilot Computer Autopilot
The Simrad NAC-D Autopilot Computer is an autopilot computer with a 3 x 3 x 8 in housing. It provides autopilot control for steer-by-wire and electronic vessel control installations, and marine electronics installers use it with supported SeaStar, Yanmar, Volvo, and Yamaha control systems.
Technical Specifications
| Product type | Autopilot computer |
|---|---|
| Product category | Autopilot |
| Weight | 0.46 lb (208.7 g) |
| Dimensions | 3 x 3 x 8 in (76.2 x 76.2 x 203.2 mm) |
| Steering interface | Steer by wire |
| Listed control systems | SeaStar Optimus; Yanmar VC10/JC10; Volvo IPS/EVC; Yamaha Helm Master/single-engine control systems |
Compatibility & Applications
- Fits boats equipped with electronic vessel control systems for autopilot control.
- Pairs with SeaStar Optimus control systems listed for NAC-D installations.
- Pairs with Yanmar VC10/JC10 control systems listed for NAC-D installations.
- Pairs with Yamaha Helm Master and single-engine control systems.
- Pairs with Volvo EVC and IPS drives through Simrad Autopilot Gateway for Volvo.
- Mounts as a steer-by-wire autopilot computer in marine helm electronics installations.
In a Volvo IPS autopilot installation, the unit connects through the Simrad Autopilot Gateway for Volvo. Its differentiator is support for steer-by-wire and listed electronic vessel control systems rather than conventional mechanical steering interfaces.







