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Low Tide Launching/Docking
We've all experienced this, either as sailors or instructors.
You're going away from the dock, parallel to it, but somehow you're getting pushed sideways into the middle dock. Or you're docking, and you have a huge amount of leeway, pushing you into the seawall.
What I learned in the Advanced Dinghy class from Yves is that it's all about sail trim. Even with the centerboard completely down, you have a huge sideways force if you oversheet. Not only is the sail not as efficient as it could be, but the force is more sideways than forward. With the centerboard up (for low tides), the effect is worse.
This is the season of rip-roaring tides (it can go from more than 6' at noon to negative '1 at 6 pm, and the dock time has been as early as 3:30 some weeks).
Thanks to what I learned from Yves, I've been doing the following in my lessons when we had to dock with less than full centerboard. As soon as we get away from the dock, I raise the centerboard, and we sail, completely focused on sail trim. Jib is easy, mainsail more difficult (but more important). I try to get the students completely focused on sail trim. I tell them "They'll tell
you that you can't tack without a centerboard, but they're wrong" after they've tacked without a centerboard.
When you dock in a low tide, you use these skills. In slow sailing, don't over-sheet - use just enough to get the sail working. It also helps to aim to the south end of the dock, so you have lots of room to side slip.