SDI Night, Navigation, and Limited Visibility Knowledge QuestThe Night, Navigation, and Limited Visibility Manual is the text-book literary assistant to the SDI Night, Navigation, and Limited Visibility certification course. By signing up for this course, the perspective student will learn how to build upon their underwater navigation skills and integrate them with night diving adventures, with the challenge of diving in a limited visibility environment. This manual will give an in-depth understanding in a variety of topics, including underwater navigation gear, natural navigation, compass navigation, electronic navigation, night diving with limited visibility, and finally triangulation. Using the Night, Navigation, and Limited Visibility Manual as a reference, students may utilize the Knowledge Quest Work Booklet by answering the provided questions with the most appropriate and accurate answers. The Knowledge Quest is designed to be used as an assessment for enrolled students and their respective instructors.