The new digital Global Maritime Distress and Safety System (GMDSS) is revolutionizing emergency communications and international search-and-rescue at sea. Clearly and concisely, this one-of-a-kind guide presents what you should know about using digital marine radios for emergency assistance and enhanced safety.Cobranded with America's foremost private boating educator, giving the book instant credibility Discussions of GMDSS permeate the boating press, but most boaters are not yet clear on how it works or its implications for traditional analog radio communications The enclosed interactive CD ROM includes a simulated marine radio with digital capability, to show how the system works With 35,000 students annually and 60,000 members, the United States Power Squadrons is America's largest private boating educator