Twister_Ken
Well-known member
Drive from a back-to-front storm jib?
Ah, maybe this is the problem. While undoubtedly a mizzen on a ketch or yawl can produce drive - that, after all is what it is there for - it doesn't invarably do this if it is undersheeted, scandalised, etc. Accept of course that your fully battened mizzen was different kettle of horses, fully battened sails can be difficult to depower.
But the case in point is surely a jib, hoisted on a backstay. I find it difficult to see how that can produce anything but drag (sideways or backwards) - it could only ever be a driver under the most bizarre circumstances like deliberately trying to sail backwards.
I can quite easily conceive that it would spin the stern downwind faster than the bow was blowing off downwind, thus turning the boat into the wind. But I don't see how it would do this without a deal of sliding sideways as the stern tries to go to leeward faster than the bow. So it wouldn't be a trick to try once you were right down the end of a cul-de-sac (arse-of-bag I think if you go back to the original French).
As a technique, I think it would be about as useful as the proverbial teapot au chocolat in the situation proposed by ST. As a trick to round up into a strong wind to pick up a mooring it might have value.
I can think of one time when I might have used it. Was trying to park a great white whale (Jeanneau Sun Oddity 42) stern to in a med marina. One with lazy lines. Strong wind blowing straight over the bow. As I slowed down to approach the pontoon, the bow kept trying to overtake the stern. Couldn't drop back on a hook, because of all the lazy line blocks and chains on the sea floor. And no boats either side to moor against while we sorted everything. In the end I gave up and parked bows first which left us with a somewhat undignified scramble from a low pontoon onto and off of a very high bow. Now, a scrap of sail flying from the backstay might have helped there.
<hr width=100% size=1><A target="_blank" HREF=http://www.writeforweb.com/twister1>Let's Twist Again</A>
Ah, maybe this is the problem. While undoubtedly a mizzen on a ketch or yawl can produce drive - that, after all is what it is there for - it doesn't invarably do this if it is undersheeted, scandalised, etc. Accept of course that your fully battened mizzen was different kettle of horses, fully battened sails can be difficult to depower.
But the case in point is surely a jib, hoisted on a backstay. I find it difficult to see how that can produce anything but drag (sideways or backwards) - it could only ever be a driver under the most bizarre circumstances like deliberately trying to sail backwards.
I can quite easily conceive that it would spin the stern downwind faster than the bow was blowing off downwind, thus turning the boat into the wind. But I don't see how it would do this without a deal of sliding sideways as the stern tries to go to leeward faster than the bow. So it wouldn't be a trick to try once you were right down the end of a cul-de-sac (arse-of-bag I think if you go back to the original French).
As a technique, I think it would be about as useful as the proverbial teapot au chocolat in the situation proposed by ST. As a trick to round up into a strong wind to pick up a mooring it might have value.
I can think of one time when I might have used it. Was trying to park a great white whale (Jeanneau Sun Oddity 42) stern to in a med marina. One with lazy lines. Strong wind blowing straight over the bow. As I slowed down to approach the pontoon, the bow kept trying to overtake the stern. Couldn't drop back on a hook, because of all the lazy line blocks and chains on the sea floor. And no boats either side to moor against while we sorted everything. In the end I gave up and parked bows first which left us with a somewhat undignified scramble from a low pontoon onto and off of a very high bow. Now, a scrap of sail flying from the backstay might have helped there.
<hr width=100% size=1><A target="_blank" HREF=http://www.writeforweb.com/twister1>Let's Twist Again</A>