http://www.destinationonedesign.com/prep/index.aspx?chapter=bc0b731550204c4d9f01fb5f7aa2b0ec
If the pictures did not go through go to the above link and you will be able
to view the pictures of the tacks.
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From: "Jake Scott" <[EMAIL PROTECTED]>
Sent: Wednesday, February 27, 2008 9:56 PM
To: <[email protected]>
Subject: [SEISA] Weekly Update
Buenos Noches SEISA,
Below is an article by Skip Dieball, Quantum's One Design Coordinator. It
is a pretty good article regarding roll tacking, and also reminds you to
be smooth in all of your maneuvers. I am sure you have noticed some
sailors getting very erratic with their maneuvers, and I think most of
these erratic maneuvers are very unnecessary. Smoothness is key in small
boat sailing especially in light air. The big difference between this
article and college style roll tacking is the snap at the end of a college
roll tack. The snap is important in college because that is what produces
the extra speed. It is an aggressive movement, but can be done with
precision and smoothness. So my suggestion would be to master the smooth
roll tack, and then move towards the more powerful college style maneuver.
So try working on the small things such as your hand switch and footwork
this weekend. Please feel free to call me if you have any questions.
Good luck this weekend!
Roll Tacking - by Skip DieballThis past summer I was giving a
clinic at Put-In-Bay for the Jr. Racers and we talked at length about
Roll Tacking. The Jr. scene is generally coached up by College Sailors,
so many times I'll notice that teams try to violently roll the boat
through the tacks. Although the spirit is good, many times the
execution is not good and sometimes counter productive.
In order
to execute good Roll Tacks, we have to understand what it is we are
trying to accomplish. In most sailing (outside of College Sailing), the
goal of a good maneuver is to minimize the "pain" of losing speed.
Tacks and maneuvers related to tacks (720s, leeward mark roundings) are
sometimes the most painful in terms of "down speed" maneuvers. So as
we've evolved in sailing, so has our attention to these maneuvers.
The
first thing I try to communicate to folks is that you have to be smooth
in executing all maneuvers. In order to be smooth, you have to be
coordinated with yourself and your teammates. In this article you will
see that Steve Frazier (Univ. of Rhode Island) and Jesse Shedden
(Florida State U.) execute a great roll tack in the Interlake.
It
didn't take Steve and Jesse long to make smooth Roll Tacks, but it did
take a bit of coordination to get there. Let's analyze their
maneuver.....
A successful Roll Tack starts on the front end.
You've got to make certain that everyone is ready and that the driver
has communicated his/her intentions of tacking. Once everyone is ready,
the driver then scans the water to find a "flat spot" in which to start
(and finish) the maneuver. If you try to pull off any tack or gybe in
the presence of waves, it could be counter-productive.
Once
you are satisfied that you can get through the water without the waves
knocking you around, start off by communicating that you are turning
the boat. On my boat, I simply count to coordinate the facets of the
tack. The initial turn is "1", followed by "2" when you are in the eye
of the wind and "3" when you want to roll the boat through the tack.
Here
you see Steve and Jesse in their "1" stage. Notice that there are no
violent motions with either the tiller of crew weight. The Interlake
(and most boats) will naturally want to turn into the wind, so the job
of the driver is to maintain a nice pace through the tack and the
coordinated crew work.
Still
in the "1" phase, you'll see that both Steve and Jesse are now moving
their weight inboard so that the boat maintains a nice pace through the
tack. If they didn't move in, Steve would have needed to use more
tiller/rudder to turn the boat, which causes the boat to slow down
slightly.
As
they move into the "2" phase (into the eye of the wind), you'll see
that they haven't moved drastically one way or the other. The boat
still has a nice pace and Steve still has control over the turn of the
boat. Many times (especially in Interlakes) I'll see the driver stand
up or the crew lean against the boom. This might be needed in some
boats that have a tough time turning, but in most dinghies (especially
Interlakes), the boat will turn on its own.
Now
fulling into the "2" phase, you'll notice that both Steve and Jesse are
moving their weight to the rail. This, coupled with the position of the
tiller/rudder helps get the boat through the eye of the wind faster and
gives you the heel you need to gain leverage through the "3" phase.
Notice that the mainsail is still tight (you gain energy off the tight
leech) and the jib is "boxed" or backwinded. This helps pull the bow
through the eye of the wind.
Now
the guys are through the eye of the wind and the boat has the proper
leverage for them to cross through and exit the tack with hopefully the
same speed as you entered the tack. Note that the tiller has never
really been "forced" hard to the side.
The
"3" phase is the quickest of the four phases. This is where not only
will you slide your weight out, but you'll then cross over to the other
side as the boat is turning to its "exit" course.
The
4th phase below is the final phase and here you see both Steve and
Jesse on the new weather rail and the boat exiting the tack with great
speed (evident by the flow off the rudder). You'll notice that Jesse
has his arm above his head finishing the trimming of the jib. On 1407,
the jib is 2:1 with a pulley off the clew. Jesse can make his life
easier by always monitoring the "lazy sheet" and making sure it isn't
too loose. If that lazy sheet is ready for the tack, the amount of
sheet to pull will be substantially less.
As
you can see there are many facets to the Roll Tack. What is important,
and what I keep telling folks at clinics and seminars, is to be smooth
with the maneuver. If you are like me and don't have the agility of a
20-something College Sailor, then scale it back, but always stay
coordinated. Your boatspeed won't suffer if you concentrate and
coordinate.
Jake Scott Cell 214-929-5908"I never let the classroom interfere with my
education." Mark Twain
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