There are many living at the present moment who will remember the time
when even the large yachts of 100 to 200 tons were never given more
than 12 feet draught. This was done to enable them to enter tidal
harbours, the greater number of which only have a depth of 15 feet at
high-water neeps. But there is another argument in favour of not
having too great a draught of water, and that is, it is not an element
of speed, beyond helping the sail power; and the existence of yachts
like the old 'Fiery Cross,' which only drew 8 feet and was a most
successful winner, and of the Herreshoff boats, which do not draw so
much as the English-built raters and are the cracks of the day, points
the lesson that it is well to put a limit where a limit may be
altogether an advantage.
Great care is necessary in apportioning out beam, no matter whether
the yacht is to be of large or small displacement; great beam in the
case of a yacht of small displacement is only suitable for waters such
as Long Island Sound, or long rolling seas, and is useless in heavy
broken water like that met with in our channels; because it is a
difficult matter, without weight, to drive through the seas. When
great beam is given to a yacht of large displacement, she may be able
to fight her way through the water, but it will not be at the greatest
speed for the given length, since it was proved by the old Solent
30-ft. and 25-ft. classes that when beating through a head sea a yacht
of the same length, but of small beam, such as the 'Currytush' and the
late Lord Francis Cecil's little 3-tonner 'Chittywee,' were able to
travel faster through the water whenever it was a hard thrash to
windward. The general opinion of those competent to judge is, that
3-1/2 to 4-1/2 beams to the length on L.W.L. is about the most
advantageous proportion, some going even so far as to assert that
three beams may be given; but, in dealing with small yachts, 5-raters
and 5-tonners, as this chapter does, the writer believes that four
beams to length is a good proportion to meet all kinds of weather
with; and if 30 feet be the length 7 ft. 6 in. the beam, and 5 ft. 6
in. the draught, such proportions will be found to give quite
sufficient scope to any designer in order that a remarkably fast
weatherly little ship may be the result of his calculations. The
height between the decks with a large displacement would give 4 ft. 6
in. to 5 feet head-room. Nothing has been said about the sail-area,
which should not be taxed.
The element sail-area appears to be the stumbling-block in the present
rating rule. It is limited, and the consequence is the cart is put
before the horse, and the hull is built to the sail-spread. Thus the
hull is being minimised to carry the small area allotted to certain
lengths.
Public-domain text, read in full here on John Shaqi.
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