No, no, each sector had its own roll and it was track orientated...Same as Harco. You picked up the map roll with all the other clutter for the nav bag at briefing. Navigation on the Trident was certainly NOT done with the moving map...It was done with VORs and NDBs as indicated on an RMI. You could lock the autopilot to a VOR radial and uncage the drift shutter if you wished but mostly the autopilot would be locked to Heading and the handling pilot would steer with the heading pointer knob on the compass, changing heading as the RMI needle swung round to indicate the passage of a fix and make a small allowance for drift as appropriate.
We didn't have glass cockpits in Tridents you know!
Here an old picture in the cruise...Note the MachNo:-
