Robertson Chartplotter

[rlw]

My boat has a Robertson Dataline Chartplotter, Mono LCD display, seperate handset and 4 CMAP CF-85 cardreader unit. Although a bit dated I would like to start using it. I figure it is of about '94 vintage judging by ads in back copies of MBY

Is there anyone who has a manual lying around ? I would also be interested in an old cartridge for testing purposes.

Any help much appreciated.

Rob