This is a good book for anyone involved in any outdoor activity which could, perhaps unintentionally, take them beyond their usual comfort zone:

THE SAS SURVIVAL HANDBOOK.
Author: John Wiseman.
First published: 1986.

From the back page of my 1986 edition:-
'John Wiseman served for 26 years with the Special Air Service (SAS). His book is their complete course: how to survive outdoors, on land or sea, in any weather, in any part of the world'.

A veritable mine of useful information. My only criticism of the my edition is that it lacks an index.

My edition is a big, heavy volume - one you wouldn't consider carrying in a rucksack. More compact editions have been published since then.

Nick

Neris Valkure - 1. Folding kayak.
Gumotex N 1. Inflatable kayak.

http://nickayaker.blogspot.com