I just received my version of a new book published by IANTD in Czech Republic that focuses on Cave Diving Navigation.
The book is co-authored by Daniel Hutman and Bil Philips.
It is a very interesting initiative to try to standardize line and navigation protocols, very well illustrated and easy to use.
It's in English and available in paper and electronic versions (www.iantd.cz/en)
I have no personal interest in IANTD (besides being certfied at different levels - not instructor).
The book is co-authored by Daniel Hutman and Bil Philips.
It is a very interesting initiative to try to standardize line and navigation protocols, very well illustrated and easy to use.
It's in English and available in paper and electronic versions (www.iantd.cz/en)
I have no personal interest in IANTD (besides being certfied at different levels - not instructor).