River or canal, 'Captain Tripsy' needs all his wits about him to cope with the trials and tribulations on his first boating trip. For example: What is the 'key' to using a canal lock? How do you cope with a fellow skipper who delights in 'winding' you up? Can a boat go through the air? Is a river 'Bore, ' a good thing? Who is the mystery girl in Dywoman Tunnel? An entertaining and informative short story, with an intriguing ending