This coursebook and textbook for a secondary/postsecondary level course in navigation rules comprise one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. The individualized, self-paced course discusses the international regulations for preventing collisions at sea and the Inland Navigational Rules Act of 1980. The coursebook first provides reading assignments and objectives. A test and answer key follow. The text provides the international and inland navigational rules so that they can be compared to each other. Where they differ, they are presented in separate columns. The left column is the international rule, the right column--the inland rule. When the rule is applicable to both inland and international water, it is presented across both columns. The areas covered in the text are general rules, steering and sailing rules, lights and shapes, sound and light signals, and exemptions. Annexes provide additional and special rules. (YLB)