Date: Dec. 20th, 2015
Listers:
I have seen recently quite a bit of discussion about the difference between the
deep and shallow
C&C 30/1 versions. I would like to add:
1. Some posters have found the builders published numbers to be of little use,
when compared to their own measurements. I would agree, because boats will vary
greatly in draft (differing loads), if the measurement is taken from the
flotation water line. Also many boats have had their PAINTED waterline changed
(usually raised) over time. I would expect the DIFFERENCE between the published
figures for deep and shallow keels to be accurate, and applicable to all boats.
Frequently the designer (George inthe case of the 30/1) chooses the HALF LOAD
condition for the design draft, altho' I don't know in this case.
We are only interested in the DIFFERENCE between two boats' draft anyway.
2. Because the "smile" (bottom of the hull mould) is the same in all boats, is
easily found/identified , is adjacent to the keel, and is independent of plane
of flotation/load, it can serve as a measurement point when COMPARING keel
depth. One can measure easily from the bottom of the smile to the bottom of the
keel when the boat is out of the water. Since the smile does not exactly
parallel the waterline , I would suggest the AFTER point on the smile to
compare two boats' draft.
3. As to my own experience, I've personally designed and built a 23' and a 35'
racing boat as well as built a 40' boat of my son's design. I currently own a
1982 C&C 30 Mk1 (one of the few built in the Rhode Island plant, with moulds
trucked down from NOTL, Ont.)
Francis Tibbetts
francistibbe...@hotmail.com
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