saltwater_gypsy
Well-Known Member
- Joined
- 13 Jan 2008
- Messages
- 1,946
- Location
- Now back in Scotland . Boat for sale
Re: Lee bowing the tide
Is this still rumbling on!!!!! Maybe definitions might help.
(1) Lee Bowing was defined by Dave Perry in an early post by dylan . It is the notion that by pinching and getting your achieved course through the direction of a curret the sacrifice in boat speed is worthwhile because you will be taken up to windward by the current. Untrue because the boat is "unaware" of the current and even if there was an effect it would be disadvantageous because it would bring the apparent wind even further forward.
(2) Lee bow tack in Tidal Streams in passagemaking (or racing). If you are in a tidal stream and sailing (beating) the boat at best speed then there is an advantage in choosing the tack which will take you to windward but only because it is prudent to make to windward while you can or if it suits your passage plan.
Here the boat is moved bodily in the tidal stream
(3) Ferry Gliding is where you achieve sufficient boatspeed (usually under engine) to make the boat stationary over the ground then angle the boat across a current to generate a sideways motion. Not to be confused with (1) where you are trying to trade boatspeed against achieved course.
(4) Lee Bowing Tack When racing, particularly in one design fleets where boat speeds are evenly matched, if you cannot legitimately cross in front of a starboard tack yacht but its a close thing then you can do a lee bow tack. You go to about a boatlength away and tack "under him". If this works well, you will still be in clear air after the tack but the bounce from your sails will make life impossible for the other boat and he will tack away. Sorted!!
Thats it!!! (I hope)
PS thin plywood sails wood be fine. The latest generation of sails look like sheet metal. Reefing could be a problem!
Is this still rumbling on!!!!! Maybe definitions might help.
(1) Lee Bowing was defined by Dave Perry in an early post by dylan . It is the notion that by pinching and getting your achieved course through the direction of a curret the sacrifice in boat speed is worthwhile because you will be taken up to windward by the current. Untrue because the boat is "unaware" of the current and even if there was an effect it would be disadvantageous because it would bring the apparent wind even further forward.
(2) Lee bow tack in Tidal Streams in passagemaking (or racing). If you are in a tidal stream and sailing (beating) the boat at best speed then there is an advantage in choosing the tack which will take you to windward but only because it is prudent to make to windward while you can or if it suits your passage plan.
Here the boat is moved bodily in the tidal stream
(3) Ferry Gliding is where you achieve sufficient boatspeed (usually under engine) to make the boat stationary over the ground then angle the boat across a current to generate a sideways motion. Not to be confused with (1) where you are trying to trade boatspeed against achieved course.
(4) Lee Bowing Tack When racing, particularly in one design fleets where boat speeds are evenly matched, if you cannot legitimately cross in front of a starboard tack yacht but its a close thing then you can do a lee bow tack. You go to about a boatlength away and tack "under him". If this works well, you will still be in clear air after the tack but the bounce from your sails will make life impossible for the other boat and he will tack away. Sorted!!
Thats it!!! (I hope)
PS thin plywood sails wood be fine. The latest generation of sails look like sheet metal. Reefing could be a problem!
