Several other skills are often referenced as being desirable or necessary.
These include proficiency with:
climbing and mountaineering techniques,
making rope from readily available material,
knottying,
knife usage,
basic toolmaking.
Of these, familiarity with the use of a knife is usually paramount as the knife may be used to build shelter, process material for fire-building, create wood tools, and for defense.
First aid (wilderness first aid in particular) can help a person survive and function with injuries and illnesses that would otherwise kill or incapacitate him/her. Common and dangerous injuries include:
The survivor may need to apply the contents of a first aid kit or, if possessing the required knowledge, naturally-occurring medicinal plants, immobilize injured limbs, or even transport incapacitated comrades.
Survival situations are sometimes resolved by finding one's way to safety, or one may need to move to find a more suitable location to wait for rescue. The sources observe that to do either of these safely requires some navigation equipment and skills. Types of navigation include:
A survival manual is a book used as reference in situations where a human's survival is threatened - expected or unexpected. Typically it will cover both preparation and guidance for dealing with eventualities.
There are many different types of survival manuals, but most have a section of standard advice. These are sometimes republished for public distribution: for example the SAS Survival Handbook, United States Army Survival Manual (FM 21-76) and United States Air Force Survival Manual (AF 64-4).
Other manuals have been written for more specific uses, such as wilderness or maritime survival.
Much of today's teaching principles on survival are derived from the work of SAS Survival Instructor Lofty Wiseman.