You'll spend the first 15-20 mins plotting the route on a chart (provided). During which time you won't answer any questions
. Once this is done though you should be able to tick off 5 or 6 answers straight away. As has already been said, you need to work really accurately as there are sometimes two answers very close together.
There are 5 questions at the end on radio nav so know your ADFs, VORs, VDF etc.
Nav is the only one of the 6 exams I have done to date where I felt I really needed all the time allocated. Oh and as I'm sure you're aware, electronic calculators aren't allowed so all calcs have to be done on the wizzy-wheel.
BTW the confuser is a good indication of the type of questions asked.
All the best for the exam
