Today’s sailors rely on GPS for position finding and passage making. But what happens if your electronic navigation systems fail? x000D This book provides you with simple, practical, get-you-home navigation techniques that could save you in an em
Today’s sailors rely on GPS for position finding and passage making. But what happens if your electronic navigation systems fail? x000D This book provides you with simple, practical, get-you-home navigation techniques that could save you in an em
