I have a 12 year old Raymarine 400G AST on my sail boat and it works fine.  But before I do an Atlantic crossing I would like to acquire a backup course computer.  Is there a model in current production that will make a suitable backup and not induce significant installation issues if it has to be installed st sea?

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Welcome to the Raymarine Technical Forum Mark,

The EV400 (w/p70 or p70R Autopilot Control Head (required) and EV-1 Sensor Core (required)) would typically be used to replace a 400G Autopilot Course Computer. 

Thanks for the reply.  I have purchased the EV400 sail pack.  All of my other instruments are 12 year old Raymarine instruments on a Seatalk 1 network.  Do I need to also purchase a Seatalk 1 to Seatalk ng convertor to get this to work?  My boat is in a remote location outside the US so I need to bring everything with me when I return to the boat in 6 weeks.

Yes, you would need the Seatalk to Seatalk NG converter to communicate with the older Seatalk 1 devices.

Thanks for the reply.  Just to be certain, are you referring to part E22158?

One more related question.  I have a rudder reference transducer already installed that came with my 12 year old ST7001+/400G autopilot.  Do I have to replace it with the one that comes with the EV-400 Sail Autopilot Pack, or can I continue to use it with the new autopilot?


Underway - Raymarine, US said:

Yes, you would need the Seatalk to Seatalk NG converter to communicate with the older Seatalk 1 devices.

Yes, correct the Seatalk to Seatalk NG converter kit E22158.

The rudder reference sensor has not changed, so you can connect the existing rudder reference to the ACU-400.

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