T&T: All chain rode scope question.

[Faure, Marin]

>To settle an argument, I am looking for an all chain rode anchoring
scope table.

The Bruce website has a chart of sorts
(http://www.bruceanchor.co.uk/cast.htm )  At the bottom of the page is a
statement that in "rough weather" with all-chain rode (and a Bruce
anchor) the recommended minimum scope is 4:1, for a nylon/chain rode a
minimum of 7:1, and for all-nylon a minimum of 10:1.  This is if the
winds are expected to kick up.  The 4:1 all-chain recommendation seems
way too short to me.  I have always heard it said that with all-chain a
5:1 scope is okay for "normal" conditions, but if things are expected to
get rough a 7:1 or more is what you'd want.  If it's going to get really
windy put out everything you've got.

If you have access to a copy of Earl Hinz's book "The Complete Book of
Anchoring and Mooring" there may be a chart or at least a description of
the information you're looking for.


______________________________
C. Marin Faure
GB36-403 "La Perouse"
Bellingham, Washington