A READER in Anchorage,
Alaska, who calls himself or herself “Iceberg” asks if I could repeat a column
I recently wrote about balance in sailboats. Well, I don’t remember writing
about that subject recently, but I did write about it many years ago. So here’s
hoping that this is what you’re after, Iceberg:
THERE ARE MANY DESIGN
FAULTS that sailboat owners will admit to, but unseaworthiness is not one of
them. A skipper might well shrug off a lack of accommodation. He or she might
well agree the boat is slow, or hard on the helm. But nobody wants to own an unseaworthy
boat.
Seaworthiness is the happy
result of a lot of factors but there is one that is often overlooked. It’s
called balance.
According to Tony Marchaj,
a sailor, pilot, naval architect, and research scientist, “Almost by
definition, seaworthiness cannot be achieved if the boat is badly balanced.”
So what do we mean by
balance? That question was answered by a famous British designer, J. Laurent
Giles. He said good balance is “freedom from objectionable tendencies to gripe
or fall off the wind, regardless of angle of heel, speed or direction of wind.”
He added that a well
balanced boat had an easy motion in a seaway, that is, she passed easily over
the waves, neither tending to plunge the bow deeply into the next wave ahead,
nor throwing her nose high in the air as a wave passed the fore body. She would
also unfailingly lift her stern to a following sea.
“One requires of the
balanced yacht that she should retain the utmost docility and sureness of
movement in manoeuvering at sea, in good or bad weather,” he added. “She must
maintain a steady course when left to herself, but must be instantly responsive
to her helm so that the heavier seas may be dodged if circumstances permit. She
must be capable of being left to her own devices, sailing, hove-to, or under
bare poles.”
That sounds like a very
tall order to me. What sort of hull has this wondrous quality of balance?
Here’s Marchaj again:
“In a narrower sense, this
means that the inherently balanced hull does not substantially alter its
longitudinal trim, and does not alter its course during the process of heeling
and rolling.” In other words, to be well balanced, a hull, when heeled, should
immerse about the same volume of topsides forward and aft.
Marchaj points out that
many of the good old boats still sailing now were either designed for, or
affected by, the old International Offshore Rule, which produced shallow, beamy
hulls with pinched bows. “Usually, when they heel, the stern is lifted and the
bow falls. Consequently, these boats are difficult to control by rudder and are
unseaworthy.”
If the bow digs in as the
boat heels, a boat will try to round up into the wind, of course, not only
because of the wedge effect of the forward sections but also because the center
of lateral resistance has moved forward while, at the same time, the center of
effort of the sails has moved outward and gains more leverage. This is when the
person at the helm suddenly finds the tiller up under his chin. Not that it
does much good if the boat heels too far and the rudder comes out of the water.
Luckily, most of us don’t
often sail in sea conditions that challenge the full seaworthiness of our
boats. But if you should be of a mind to cross an ocean or sail around Cape
Horn, balance might be a good thing to keep in mind as you search for the right
boat.
Today’s Thought
Everything splendid is
rare, and nothing is harder to find than perfection.
— Cicero
Tailpiece
“Are you allowed to smoke
at school?”
“No.”
“Are you allowed to drink
at school?”
“Of course not.”
“How about dates?”
“Oh, dates are fine, as
long as you don’t eat too many.”