psai underwater navigation manual

Updated and Full Color Edition of the PSAI Underwater Navigation Manual is Now Available

Updated and Full Color Edition of the PSAI Underwater Navigation Manual is Now Available

PSAI has updated, revised and put in full color format PSAI Underwater Navigation Manual. The new addition of the manual will be an asset to divers who are taking a PSAI Underwater Navigation Course and to PSAI Instructors teaching this course.

psai underwater navigation manual