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    Posted: 29 Sep 17 at 4:12pm
Originally posted by iGRF

And if it's a cross tide?Say 3 knots in a 7 knot wind?

The pathfinder on port with the tide on it's weather bow and by starting early you get the tide on your lee bow with the associated combination of apparent wind (10 knots)with the fleet stationary being fed by a pathfinder boat (4 knots) ?

This kind of sounds like you're about to say something stupid, which is going to be ironic given your last post about knowing all there is to know about racing in tide. 

Also, my point was, you said "when tide is favourable, go early". You don't say where the tide is favourable, so I assumed you meant more generally wind against tide across the course. 

What you actually meant, I now suppose, is that "when the tide is favourable on the left, go early". Which I agree completely with. 




Edited by mozzy - 29 Sep 17 at 4:24pm
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 4:22pm
Originally posted by JimC

Originally posted by mozzy

Not sure I understand GRFi's "if tide is favourable, start early". If it's favourable, then it's favourable for everyone, and the pathfinder will be being swept upwind just as quickly as the early starters... 

Well, that does presuppose the tide is constant across the course, which at most venues seems unlikely. If the tide is better on the left you don't want to start late and thus right.

Yeah, which is why I started my post:

Originally posted by mozzy

If you want to go left, start early. If you want to go right, start late. (persistent shift, topography, tidal difference across course; all the usual stuff).
 

What iGRF didn't make clear was that by favourable, he meant favourable in a particular place: the left. Because, if the tide is favourable on the right, you'd want to start late. But if the tide is just generally favourable across the course, then it makes no difference. 

(People say 'favourable tide' when it is just running the direction you are going and will interchange 'wind against tide' with 'a favourable tide on the beat' or 'tide in your favour on upwind').
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Gordon 1430 View Drop Down
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Posts: 310 		Post Options Post Options   Quote Gordon 1430 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 4:33pm
Well Mike Holt and Carl Smit must have had it sorted, well done guys.
Especially Mike who posts on here and originates from Essex, and still sounds like it in most interviews.
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 4:36pm
Originally posted by davidyacht

I can feel some leebow effect discussion coming on ...

I see iGRF is a big proponent of the tidal 'lee bow effect' from other threads. Which says all you need to know. 
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Posts: 714 		Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 5:32pm
But I think the semantics of this thread equally applies to the lee-bow argument.
For tide uniform across the course, it's probably not an issue, but get it on the Lee bow where it' strongest?

*dons tin hat*
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Posts: 370 		Post Options Post Options   Quote Old Timer Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 5:51pm
Originally posted by iGRF

And if it's a cross tide?Say 3 knots in a 7 knot wind?

The pathfinder on port with the tide on it's weather bow and by starting early you get the tide on your lee bow with the associated combination of apparent wind (10 knots)with the fleet stationary being fed by a pathfinder boat (4 knots) ?

Oh no ... this is another version of the iGRF lee-bow theory ...

It will only make a difference if the tide is not even over the whole course ... 
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Posts: 370 		Post Options Post Options   Quote Old Timer Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 5:52pm
Originally posted by mozzy

Originally posted by davidyacht

I can feel some leebow effect discussion coming on ...

I see iGRF is a big proponent of the tidal 'lee bow effect' from other threads. Which says all you need to know. 



Indeed ...  LOL
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Posts: 114 		Post Options Post Options   Quote By The Lee Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 8:13pm
Anyone who believes the tide has a leebow effect must have their head on another planet devoid of logic...
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Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 8:45pm
There are 2 Lee how effects from what I remember of previous cross purpose discussions. One is simply crossing the tide at the most logical place, the other a mythical beast akin to a flying unicorn.
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 17 at 9:05pm
Yep. Rupert's right. What GRF describes as lee bow effect isn't the flying unicorn mythical one.
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