In this course we look in detail at natural navigation techniques and at the skill of navigating using a compass underwater. (prodiversstkitts.com)
This course includes limited visibility diving and underwater navigation techniques. (blackbirdresort.com)
Alex, with its unique Duet Navigator ™, provides the capability for interaction and navigation techniques of the two screens and furthermore utilizes the capabilities of Android to enhance the reader's experience by supporting interactive access to the Internet for references and links. (slashgear.com)