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S&S Swan General - Draft
23 September 2020 - 15:23
#1
Join Date: 16 February 2007
Posts: 199

Draft

hello dear all,

may I ask a question?

- are there any Swan 47 with a shallow draft of 2,2 meter provided originally by Nautor?

 

Thank you very much// Philippe

23 September 2020 - 15:58
#2
Join Date: 02 January 2008
Posts: 1439

Dear Philippe

There is old information that 011 has cut the keel by 15 cm, this results in slightly more draught than your suggestion.
The 47 centerboarders have less draught though.
Kind regards
Lars

23 September 2020 - 17:39
#3
Join Date: 29 January 2007
Posts: 823

Dear Lars,

was the modification approved by Nautor and/or Sparkman&Stephens?

Fair winds!

matteo (47/069 Vanessa)

23 September 2020 - 18:16
#4
Join Date: 02 January 2008
Posts: 1439

Dear Matteo

Obviously approved by Nautor who did the change. Would be necessary to dig out the original building specification for finding out if there were other aspects
Kind regards
Lars

23 September 2020 - 20:01
#5
Join Date: 16 February 2007
Posts: 199

Thanks a lot dear Lars. And thank you Matteo for asking if such a "cut" was approved and performed by Nautor.

-I guess that such a "cut" must have influenced the weight and the shape of the keel, the height of the mast and probably other things that most probably Lars can enumerate.

-I also guess that Nautor must have taken into account all the probable influences and compensated for them.

-Then I wonder why such a "strange" modification of shortening the keel by "only" 15 cm ? And why only on one boat? (Hull 011). Especially when the center board version was available and provided a more significant reduction of the draft!

-I am perplex!

Thank you for illuminating me// Philippe 

26 September 2020 - 06:41
#6
Join Date: 02 January 2008
Posts: 1439

Dear Philippe

You are right, 011 has the short rig, I = 60.0 ft, and both keel pockets filled. This  indicates that S&S has approved the combination.
The S47 keel pockets are quite big, and were normally empty. 
Originally provided for the possibility to trim the bow or the stern down for rating purposes.
Kind regards
Lars

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