Next message: Dave Cooper: "Re: T&T: stern tube"
Lawrence Zeitlin wrote:
"The weight of a boat has little to do with the load
on a mooring line...."
This is not correct.
If it were then one could use the same size mooring
line on a 3 ton vessel as one would on a 30 ton
vessel, and that is obviously not the case.
Ships Classification Societies such as Lloyds and
American Bureau of Shipping define the minimum
restrain capability that must be provided for a vessel
of a given tonnage. The required size of appropriate
cordage is then selected. For example. The
specifications for a 50' vessel is appropriately
double that for a 25' vessel. Other factors to be
considered when mooring and anchoring are of course
WIND, CURRENTS and WAVES. Wind will push a vessel with
a quadratic effect, so if the wind speed goes up 3
times the force on the vessel will increase 9 times; I
KT of current is generally regarded as having the same
effect as 10 KTs of wind and waves will cause the
vessel to pitch and yaw.
With all these factors at work, in a gale (35 to 47
KTS), I would prefer to rely on my ground tackle than
some mooring that may or may not be in good condition
possibly due to poor maintenance or a number of
vessels rafting up on it in the past.
So if a Karibiner is of sufficient weight then it may
not be a weak link, you do however still have the
problem of getting off the mooring. Snap hooks are
very easy to get on and difficult to get off. They
present another boating risk and the fact that "a lot
of people do it" or "have been doing it for 10 years"
does not make it good practice. Envisage: it is
blowing 35 knots and you want to go home before the
wind gets to 60 KTs, how hard will it be to get that
snap hook off the ring?
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