• FOREWORD 2INTRODUCTION 31 HOW SAILS WORK 6Flow theory 7Some fundamentals 9Beating 12Beam reach 12Balance 13Weather helm 14Lee helm 14Apparent wind/true wind 152 RIG TYPES 16Setting up the rig 17Centring the mast 18Adjusting the shrouds 19Pre-bend 20Checking the rig under sail 203 JIBS & GENOAS 21Foresails 21Foresail controls 22Roller reefing foresails 274 MAINSAILS 28Mainsail controls 28Trimming the mainsail 33Fully battened mainsails 34Lazy jacks 35In-mast reefing mainsails 365 REEFING 37Reefing a conventional mainsail 386 SAILING UPWIND 40Acting as one 40Sails - small but perfectly formed 40Light airs (Force 1 to 2) 41Medium wind (Force 3 to 4) 41Heavy winds (Force 5 and above) 42Target speeds 42Upwind VMG 43Lee bowing the tide 44Wind shifts and squalls 447 REACHING 45Tracks and barber haulers 45Reaching blocks 46Whisker poles 46Reaching sails 47Hull speeds 478 DOWNWIND SAILING 48Preventers 48Poling out headsails 49Roll control 49Mainsail or no mainsail? 50Training runs - tacking downwind 50Downwind VMG 51Using waves 51Gusts 519 TRADE WIND SAILING 52Twin Headsails 5310 SPINNAKERS 54Asymmetric spinnakers 55Setting a gennaker 55Hoisting 56Trimming 56Reaching 56Running 56Gybing 57Dropping 57Rollers 57Bowsprits 58Snuffers 58Packing spinnakers 5811 SYMMETRICAL SPINNAKERS 59Setting up 60Hoisting 61Trimming 62Gybing - dip pole method 63Gybing - end to end method 63Dropping - by the head 64Dropping - tripping the windward clew 65Broaching 6512 SAILS AND SAILCLOTHS 66Laminates 67Woven sailcloths 68UV protection 68Spinnakers and gennakers 695RYA Sail Trim Handbook13 HEAVY WEATHER SAILS 70Heavy weather jib 70Trysail 71Storm jib 71Waves and heavy weather 72Storm sailing 73Heaving to 74GLOSSARY 75Sailmakers' terms 75INDEX 80NOTES PAGES 83

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