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Search took 0.00 seconds. Search: Posts Made By: goboatingnow

Forum: Challenges

02-12-2013, 09:51

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Lee bow , means a current fine on the bow. Much a...

Lee bow , means a current fine on the bow. Much a beam current AFAIK

Dave

Forum: Challenges

29-11-2013, 15:23

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Again you seek to obfuscate. I merely drew...

Again you seek to obfuscate. I merely drew attention to that case , it is not relevant to the bow current case I mentioned. We can debate this new one if you like , nor have I mentioned that the...

Forum: Challenges

29-11-2013, 13:47

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Tks Evans , you understand perfectly Dave

Tks Evans , you understand perfectly

Dave

Forum: Challenges

29-11-2013, 13:47

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Seaworthy , you are mixing up winds. A boat sails...

Seaworthy , you are mixing up winds. A boat sails in the apparent wind. It does not sail in the true wind.

Hence you must look at the effect of apparent wind angle.

What I have said is there...

Forum: Challenges

29-11-2013, 13:38

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Your mixing up things. If a constant tide on the...

Your mixing up things. If a constant tide on the bow and a constant wind then the next affect is to generate a small increase in wind angle over the situation where the tide is not present. Because...

Forum: Challenges

29-11-2013, 10:52

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

you cannot complete you conclusions without continuing the example to include apparent wind.

Futhermore, with the greatest respect, it is not a beautifully simple diagram, it actually obfuscates...

Forum: Challenges

29-11-2013, 09:00

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

The effect is rather misnamed. What's clear and...

The effect is rather misnamed. What's clear and You showed it yourself is that there is a wind angle benefit when sailing with the current on the bow, over the situation in no current , hence this...

Forum: Challenges

28-11-2013, 18:11

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

I have countered that my drawing shows a bow...

I have countered that my drawing shows a bow effect , an improvement in wind angle over the situation of no current, several attempts by others mix up vector references. Whether one can turn a very...

Forum: Challenges

28-11-2013, 10:05

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

That is where progress to the mark can be ascribed purely in terms of VMG. Ive not been in a race where it can be soley used to measure success to the next mark

dave

Forum: Challenges

28-11-2013, 10:01

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Bow effect gives a small increase in wind angle over the situation where there is no effect. Whether you can get an advantage from that effect is an entirely different situation. At the end of the...

Forum: Challenges

28-11-2013, 09:48

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

( and Im sorry so many postings since I last posted here, hard to follow)

No , That might be described as the lee bow benefit. However its described as the lee bow "effect". Whether it...

Forum: Challenges

21-11-2013, 05:28

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

No he is motoring at 5kts against the current, not 10kts ( he never mentions that ) so rerun your logic above

dave

Forum: Challenges

21-11-2013, 05:22

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Paul I put up that diagram to illustrate the complete ground based referenced vector system that shows all the relationships between every relevant vector

The answers once you add in ground...

Forum: Challenges

20-11-2013, 13:30

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

the problem is when you start referencing ground ( i.e. compass) headings with water referenced headings

This is how complex it gets
...

Forum: Challenges

20-11-2013, 10:57

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Furthermore your use of the term true wind does...

Furthermore your use of the term true wind does not comply with this definition

"If you are motoring directly against a 5 knot current, however, then you have Apparent Wind of 10, True Wind of 0,...

Forum: Challenges

20-11-2013, 10:34

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

When you head south the Apparent wind is 2.5 from...

When you head south the Apparent wind is 2.5 from the stern not the bow as it would be impressive to sail in an apparent wind dead on the bow !

Dave

Forum: Challenges

20-11-2013, 04:02

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Seaworthy you have just shown the existence of a...

Seaworthy you have just shown the existence of a current generated wind referenced to ground

Do this excercise

Take a ground wind direction , take a current set and drift vector , assume a...

Forum: Challenges

20-11-2013, 03:52

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

I referenced all vectors to ground. As you cannot...

I referenced all vectors to ground. As you cannot draw vectors referenced to different reference points.

Firstly

I have shown the wind generated by current pushing the boat through the air as...

Forum: Challenges

19-11-2013, 06:46

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

ground wind, is the mariners term for land TRUE wind,

current generates a sailing wind. that wind is ground referenced as current is ground reference, sit in your boat , with no sails, being flush...

Forum: Challenges

19-11-2013, 06:38

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Jeepers, Again the LBE has never stated you get an overall advantage to the mark

yes it is , because there is a current related wind, that affect s your ability to head in a particular...

Forum: Challenges

19-11-2013, 05:52

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Re: Let's Get to the Bottom of the Lee-Bow Effect Once and For All

This is what I call the dave perry error.

We are talking about LBE in conjunction with racing , i.e. as my diagram showed a "mark" to weather. The boat is trying to make a destination that is...

Forum: Challenges

19-11-2013, 05:31

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Dammed colonials , look at the damage that fool...

Dammed colonials , look at the damage that fool Cornwallis did !!

I have heard the term " knocked " off course, but inn relation to a wind shift , it's always called a header

Dave

Forum: Challenges

19-11-2013, 05:28

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

Ok let me explain (1) LBE in my mind has...

Ok let me explain

(1) LBE in my mind has never had anything to do with pushing the keel to weather , it has to do with the improvement in wind angles ratios as a result of a particular current
...

Forum: Challenges

19-11-2013, 03:28

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

As SL p demonstrated a while ago. Having the...

As SL p demonstrated a while ago. Having the current dead ahead maximises wind angle ( intuitively because the resulting current ground wind is increasing the apparent wind angle.

And yes you are...

Forum: Challenges

19-11-2013, 02:39

Replies: 774

Let's Get to the Bottom of the Lee-Bow Effect Once and For All

Views: 57,001

Posted By goboatingnow

That's great but , it's nothing to do with a "...

That's great but , it's nothing to do with a " supposed lee bow effect and pinching " to mangle up a moniker. None has described it as a " lee bow benefit ". Converting any improvement ( and its...

Showing results 1 to 25 of 60

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