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The Boat |
The boat can be pushed hard
on a reach in fresh winds (see sequence further below) but as
the breeze pipes up, shifting the helm's weight backwards fast may be
needed to keep the bows up in gusts
Stuart, right is watching the bows dip as he bears away onto the reach at
the windward mark at Grafham.
The bows go down with the wind pressure on the boat (which has been
slowed by the turn) but they will lift as Stuart slackens the
main off more and the speed picks up. He shows no sign of
shifting his weight further aft---so the overall "feel"
must be that the boat is safe and he can predict it will lift.
In a stronger breeze still, he would
shift aft as he came to the mark, and slacken off quickly.
(Rounding the
windward mark like this is when the Extreme 40's go in)
The sequence below demostrates driving the boat on a reach in a brisk
breeze, at the 25th Anniversary regatta at Bala, as Alex pushes
Catapult 1 past the spectator spit. (Photos are a
few seconds apart.)
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(Sequence above, from
left.)
Alex reaches away from the mark,
spray flying from the lee bowboard
A gust (centre)
puts both bows down. He leans back, but not slackens the main, and clearly feels it is not a crisis.
(Above right)
A few seconds later he has come through the puff,
and the bows are up. More seconds on (left)
the breeze is up again, with both bows slicing into the water,
but it is still comfortable to drive the boat hard, with time to check the sail setting.
(Right)
A few seconds later again, Gareth reaches
past the same spot. Although the boat is not dipping at the
moment, he is sitting further back than Alex, needing (with his
lighter weight) to be ready to counteract a gust by weight aft.
Gareth comments that with the breeze strong and
plenty of pressure in the sail, attention goes from the
telltales to
watching the lee bowboard.
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Until the "feel" of the boat's
safety on a reach is familiar ( a combination of the speed against the
wind strength, any sensation of the boat hesitating and checking as bows
drive into the water, and good balance ready to move weight aft) a
suprise can happen reaching in quite light winds.
Alex comments from the pairs race
at Bala, with
Steve "enjoying a leisurely reach in around 10 mph
of wind.
He was
fairly well forward, keeping the boat nicely balanced and
trimmed....until a gust caught
him.
The bows dug in
unexpectedly
and before he knew it, he was tumbling forward, and then the boat was on its
side.
He could have saved
the situation by quickly moving aft and also easing the mainsheet.
The bow would then have (hopefully) popped up and then the sail
could be retrimmed and rapid forward progress resumed.
My advice when reaching is Be prepared to move aft quickly, if a
gust comes If you are not powered up, to keep the boat balanced may mean moving inboard and forward Be ready to ease the mainsheet and
reduce power. If the bow goes down, it is best to ease, let things
re-settle and then engage power."
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DIVE!--
DIVE!---DIVE!
Two helms need urgent action
(Left) There is
obvious alarm, but the lee bow is probably burying after bearing
away quickly before slackening the main---unless thrown forward
by the boat's sudden slowing, dumping the main should do it.
(Right) Chris at Bass (with much more wind
than it looks) has a bigger problem---he is on a broad reach, so
the main is well out already and the gust is digging the boat
in, with a great tumult of white water all around. It appears
about to nosedive, and probably hanging over the back is the
only option. |
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In stronger
winds, keeping speed up through the gybe (turning in a wide arc and
gybing when running dead downwind, with the wind pressure at its least)
allows an easy gybe when all the Lasers are going over. Catapult slows
in any rapid turn, so wind pressure may dip the bows while weight and
position are being shifted during the gybe.
Although it may seem illogical, reaching in brisk breezes on the sea has
the advantage that dipping into each wave gives feedback on how close
the boat is to be overpowered (although at greater strengths, the waves
will "trip" the bows at a point where inland conditions could be easily
managed.) Reaching at sea in light to moderate breeze, with a chop
running, the boat can have green water coming over the lee bow board
with no feeling of an impending dive.
(Below) Alastair on a broad reach at
Sheppey, sitting way back for safety. The boat is NOT going well trimmed
like this, but he has just finished going 40 miles round the island, and is
taking no chances about getting safely back onto dry land as soon as
possible. Sometimes hanging over the
back like this and accepting the slower stretches during lulls is the way to manage
when dark gusts are all around the lake.

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