Jag besvarar mitt eget inlägg med denna fina sida:
http://www.sailingtotem.com/2014/07/the ... ising.html
AWA – apparent wind angle
TWS – true wind speed
DDW – dead down wind, meaning wind come from directly behind the boat
AWA: 45° – 180° (DDW if poled out)
Sailcloth: nylon or polyester (not good for cruising), 2oz to 3oz per SY.
Construction: crosscut or miter cut
Hoist/douse: from bag
Storage: very bulky
A drifter is for the lightest of winds only and the size (geometry) varies widely. It’s often attached to a stay, but can be a free flying luff with Dyneema luff line. Drifters have a very full shape to slowly bend wind around the sail. They’re relatively inexpensive, but have a very limited range of use.
Cruising chute / gennaker / MPS /asymmetric
AWA: 90°-ish (beam reaching) to 180° (DDW) if poled out.
TWS: 3 to ? (most likely 20 to 25 TWS, but can be higher if you dare)
Sailcloth: nylon or polyester (not good for cruising), 0.4oz to 2.2oz per SY
Construction: tri-radial (best) or bi-radial
Hoist/Douse: with a sock (easiest) or directly from bag
Storage: very bulky
Unlike spinnakers, asymmetric sails have only one vertical edge that can be the luff, unless hoisted incorrectly- which is symmetrically embarrassing! Sail shape is fuller in the front (luff) and flatter in the back (leech), like a headsail. It is easier to rig and fly than a spinnaker. In general, the tack attaches at the bow via a tack lines and has a free-flying luff. There are many geometry and shape variations based on boat/purpose/etc. but a general-purpose sail is most common. Using a spinnaker or whisker pole adds complexity (though still simpler than spinnaker setup), but helps the sail fly better. When close reaching, attaching the tack to pole give complete control of tack location. For broad reaching to DDW, attaching pole to clew helps project the sail to keep it filled and reduce collapsing.
Code zero / screecher
AWA: 60°-ish – 180° (DDW) if poled out.
TWS: 5 to ? (very sailcloth / AWA dependent – closer angles = less max wind, otherwise similar to asymmetric)
Complexity: easy to moderate.
Sailcloth: nylon or polyester (not good for cruising) or laminates (polyester and/or high modulus fibers)
Hoist/douse: continuous line furler (stows in bag with sail)
Storage: rolled up, so less bulky
Now we’re into it! Code sails (0, 1, 2, 3, etc.) are designed with very specific purpose (wind velocity/angle) for racing. A “code zero” for cruising doesn’t really fit what implied within racing. Some sailmakers are branding names (Doyle UPS, etc.) but let’s just call it a cruising code zero (CCZ). A screecher for cruising has the same general characteristics as CCZ, but for multihulls. To simplify here, they’re collectively called CCZ/S.
Asymmetric sails blend features of spinnaker and headsail to simplify flying. CCZ/S takes design another step closer to headsail than the rest: it still has a free flying luff, but geometry and shape slide closer to a genoa. This sail’s purpose is to increase effective AWA sailing range, and can approach close hauled angles, and handle a higher load (windspeed). It’s easier to fly, and takes up less space stowed. Furling is generally easy, although practice and good gear help. CCZ/S can be made with a UV cover to remain hoisted for longer periods, making it again one step easier to use.