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Go Back   SailNet Community > Skills and Seamanship > Seamanship & Navigation
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Seamanship & Navigation Forum devoted to seamanship and navigation topics, including paper and electronic charting tools.


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  #11  
Old 10-21-2013
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Re: How high can you point?

My boat points about like a square rigger. Bottom probably a little dirty, keel long and thick, old-ish sails sheeted to the rail. I am not sure exactly, but, I think I am tacking though at least 140 degrees.
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Old 10-21-2013
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Old 10-21-2013
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Re: How high can you point?

Quote:
Originally Posted by azguy View Post
I was on a Catalina 27 yesterday and was amazed at how high it could point, It had a new main and head sails, well about 6 months old. The head was a 135. We had the traveler pretty well centered.

I bet we were only 30 degrees off the wind and she sailed fast and smooth...
You mean the traveler or the boom?

Regards

Paulo
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  #14  
Old 10-21-2013
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Re: How high can you point?

Quote:
Originally Posted by azguy View Post
I was on a Catalina 27 yesterday and was amazed at how high it could point, It had a new main and head sails, well about 6 months old. The head was a 135. We had the traveler pretty well centered.

I bet we were only 30 degrees off the wind and she sailed fast and smooth...
Did you tack to check (by comparing compass directions). That won't demonstrate leeway, but at least gives you a ballpark number compared to true wind.

Apparent wind angle readings can be BS too if the boat is well heeled and the air is spilling off of the sails up to the wind instrument.

When I'm really curious I'll start a GPS track, tack, check the new track, then tack back and see what the angles look like. Of course this can be affected by tidal currents. It does feel great when you are short tacking with the current and have a GPS track that makes it seem like you are taking through 60 degrees.

I had a Catalina 25 that seemed to point better than most of them (based on the races that we entered), and we rarely had tacks much under 90 degrees. The Catalina 27s that I've raced against seemed to behave similarly.
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Old 10-21-2013
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Re: How high can you point?

When I installed my Davis Windex at the start of the 2012 season, the instructions said to set the tabs at 45deg for racing boats and 55deg for 'other auxiliaries'. I know the Catalina 25 isn't a race boat, so I used 55.

I works like a charm. As I start to head up, the sails will luff just as the vane hits the tab. If I keep the vane in between the tabs, all is well. It also works well for people learning how to helm while reaching.

So, to answer the OP's question: On my boat, the way I sail it, 55 degrees.

Ken
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Old 10-22-2013
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Re: How high can you point?

The headsail is a 130% dacron sail on a roller furler. It is a little baggy, and it is probably contributing to the boats poor pointing. The trades blow pretty well around here (Oahu), and we often have it rolled up partially and put a 3rd reef in the main. I will try to move the traveller to windward and see if that helps. I can feather up a little once I'm at 100 degrees. I will take her out again and make an accurate assessment using my GPS. Thanks for the responses.
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Old 10-23-2013
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Re: How high can you point?

Furling the sail at all will have pretty negative effects on your pointing ability.
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Old 01-03-2014
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Re: How high can you point?

I can bench press about 220.
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Old 01-03-2014
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Re: How high can you point?

Quote:
Originally Posted by zz4gta View Post
There are a lot of things that effect pointing. Usually a boat can point around 45* from the true wind. Those saying they can tack through 60-70* better be on an all out race boat. 30* off the apparent wind is quite common, but true wind is still another 10-15* off that. Lets stick to talking about the angle we tack through, as that is a much better measure of how a boat points.

Some of the things that effect pointing are:
bottom condition and foils
boat speed
sail condition and cut
rig tension
heel angle
sail trim
weight placement
GPS angle is what counts, with adjustment for current. Wind angle is interesting but slightly off the point.

Eventually, VMG is mostly what counts, though pure pointing can count if space is limited. This will require a little trig, unless you have some cool electronics, but you learned it in high school. Sometimes 100 degrees is faster than 80 degrees, sometimes not; it can depend on waves etc.
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Old 01-03-2014
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Re: How high can you point?

Quote:
Originally Posted by CarbonSink62 View Post
When I installed my Davis Windex at the start of the 2012 season, the instructions said to set the tabs at 45deg for racing boats and 55deg for 'other auxiliaries'. I know the Catalina 25 isn't a race boat, so I used 55.

I works like a charm. As I start to head up, the sails will luff just as the vane hits the tab. If I keep the vane in between the tabs, all is well. It also works well for people learning how to helm while reaching.

So, to answer the OP's question: On my boat, the way I sail it, 55 degrees.

Ken
Ken,
You probably meant "If I keep the vane outside the tabs all is well".
The vane between the tabs means your sails are luffing.

m
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