Navigation

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Wednesday, July 13, 2011 - 04:21 pm:      
For anyone like me who goes sailing to escape all forms of microchip technology, I have stumbled across a useful rule of thumb for calculating a Winklebrig's speed. Chuck a partly filled bottle (or anything else) on a string over the bow and if it takes 3 seconds to appear at the stern you are doing just over 3 knotts.
Use at your own risk!

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Wednesday, July 13, 2011 - 05:49 pm:      
Anyone found the flaw in the above theory?

You are a better man/woman than I, if you can run from the bow to the stern of a Winklebrig whilst underway, in under 3 seconds!!!

[Old Forum]

Adrian Evans
Username: Adrian_evans

Registered: 03-2007
   
Posted on Thursday, July 14, 2011 - 07:36 pm:      
Erm, so... if it takes 4 seconds, then you are doing 4 knots?

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Thursday, July 14, 2011 - 09:26 pm:      
No. You are going the wrong way!
The formula is as follows:-
Boat speed = (3,600x boats overall length in metres) devided by (1,852 x time in seconds).
So:-
1 second = Impossible!
2 seconds = 4.7knots
3 seconds = 3.1 knots
4 seconds = 2.3 knots
5 seconds = 1.9 knots
6 seconds = 1.5 knots

[Old Forum]

Adrian Evans
Username: Adrian_evans

Registered: 03-2007
   
Posted on Thursday, July 14, 2011 - 11:41 pm:      
I'm afraid I was pulling your leg, Martin - sorry!

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Friday, July 15, 2011 - 09:34 am:      
Glad to hear it. I was getting a bit worried about the future of British Architecture!

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Monday, September 17, 2012 - 09:01 am:      
This year I have belatedly started enjoying one of the great pleasures of the Winklebrig; that of being able to sail in shoal waters,anchoring and drying out with the tide. I started this in Brest in the summer (to get out of the ferocious wind at night)and last weekend had a glorious sail up the Deben. One thing learnt the hard way which might be useful to pass on... When sailing up a river against an ebb tide by using the green and red marker buoys to find the channel (before the channel becomes visible) , bear in mind that the channel does not take a straight line between the marker buoys, but follows the curve of the shoreline. Although I spent a lovely night about 1500m from Woodbridge on the mud, I did miss the pint I had intended to have in town!

[Old Forum]

Martin_cartwright
Username: Martin_cartwright

Registered: 04-2008
   
Posted on Monday, September 17, 2012 - 09:12 am:      
Sorry! (Julian -could you please scrub the first attempt). There follows pictures of the view astern and ahead.