I totally agree with Kate, all books contain some errors.
In a previous thread I remarked that the latest edition of the King James Bible contains mistakes, even the late great Eric Langmuir’s Mountaincraft & Leadership still does. Any mistakes are far outweighed by the importance of the content of these ground-breaking publications and do not detract from the overall excellence of any of these works.
The author clearly states that his preference is to use 1:25k plus 1:10k maps and we could debate and dispute this, and other explanations ad infinitum.
Instead, common sense should prevail and we should recognise, as stated by Dave Whalley, former Team Leader of the RAF’s mountain rescue team at Kinloss, that this work ‘brings together for the first time Best Practice as used by search and rescue teams throughout the world’
The last words I will leave to Sir Ranulph Fiennes: ‘This book is a landmark in land navigation’.
The Terra nova sounds like a Canadian bivvy system called (I think) AmStar - on a trip to Canada, four years ago, I met some folk who were using this great kit and have never been able to find it since.