Yes you're right, but I find it very difficult to steer a reliable course towing the space shuttle.
and try as a we might towing with the engine on full chat and all the sails up, Dungeoness B is still firmly attached to the land so I need a lighter alternative charging device or an even longer shore power cable, not to mention the half a yard of sand I carry to manufacture new chips as and when they fail.
SWIMBO reckons a chart case is lighter than the multihead mill we have in the galley to make the moulds for the plotter cases but naaa I'll get rid of the plastic extruding machine before I part with THAT!
Had some difficulty creating a dust free environment to repair hard disks till we realised that we could launch the space shuttle and the astronaughts could carry out the repair while on a space walk in between repairing GPS satalites.