Hello Ron. Yes, the shipping length of the caravan is the overall length(incl drawbar).Usually you have to quote the o/h length of car as well,and the ferry company adds them together.You will also need to quote the height of both when booking.
Hiya Ron, the shipping length of your caravan is the total length,(hitchhead to rear light) of your van. Ring the ferry company and clarify what they want, i.e total length of the outfit or caravan only shipping length.
A handy way to get and keep the dimensions of your caravan is to get a sales brochure for your particular make and model from the supplying dealer (if you can) and cut out the bit with the dimensions on it. Paste it onto a bit of card and stick it in your wallet (I keep mine in with my driving licence and insurance)all the best, Barney.