This volume is a revision aid in a subject which is compulsory for RYA sailing courses, including Day Skipper, Yachtmaster and the International Certificate of Competence exams, and is essential knowledge for anyone who goes to sea. It provides questions and expanded explanatory answers for each section of the Collision Rules (right of way, lights and shapes, sound signals, and distress signals), and concludes with a mixed bag of questions to consolidate knowledge. The volume is lively in its presentation and is illustrated in colour. It is designed to accompany and complement Learning the Rule of the Road" (second edition)."