Wednesday, January 8, 2014

Sailing in Gusty Winds -- a great link!

People who have sailed for many years mostly know this information, but this blog is for people with less experience, and one of the more challenging situations for newer sailors is when the weather turns gusty. You could be unexpectedly caught in gusty weather for a number of reasons. You might have expected to get back in long before the bad weather hit, but something goes wrong and you don't make it.

You need to know how to handle gusty weather. Not only will you and your companions be uncomfortable otherwise -- someone could be hurt. They could be moving toward the head when a gust hits and fall in the cabin (fall in the cabin and you're very likely to have a bad fall), or sprain something when thrown off balance, or be hurt while moving forward to deal with something.

The webpage listed below covers what to do extremely well. I'll just make a few comments in case the information doesn't quite make sense. Here's the website:

http://learntosail.hubpages.com/hub/Three-Sailing-Tips-for-Less-Heel-in-Gusty-Breezes

And here's the core, with my comments in blue:

"1. Luff up on a Gust
Watch the water to windward. Look for dark, ruffled spots that signal the arrival of a gust. Point up toward the wind just before the gust arrives. This will luff the forward part of your sails and depower them--but keep the boat driving and on her feet!"

 Start learning to read the surface of the water now. The surface does change as the wind changes. On a light wind day, you can see puffs of stronger wind coming to take advantage of them. On rough days, you can see them coming and strategize.

So what does "luff up" mean? It means to make the sales "luff," or shake. It typically (but not always) starts at the luff, or leading edge, of the sail. You make the sail luff by steering more directly into the wind. A sailboat pointing into the wind can't sail because it can't catch any wind, and it can't use the sails as an air foil. The boat is depowered, which is what you need in too much wind. You need to depower the sails. This is one way to do it, and if the gusts are significant, you need to be in position before the gust hits.

You can also steer into the wind as you feel the wind rising. Gusts often occur on a curve -- the first increase will not be the peak, and you still have time to ease its impact on your boat, but also learn to read the waves.

What does "still driving the boat" mean? The writer is suggesting that you don't point the boat completely into the wind -- just enough to weaken the effects of wind on your sail. You're still moving, and the boat is "on her feet" -- not heeling excessively.

So what this is really about is steering. Now, steering is easier when the boat is in balance, which is covered a little further below.

"2. Ease your Sheets / Back your Blocks
Move the mainsheet car down the traveler track to leeward. Ease the mainsheet a few inches. Then, set your headsail sheet blocks back a few holes along the Genoa tracks. These actions cause the top of your sail to open--or twist--to spill high octane wind up high. This keeps heel down for a more balanced boat."

What's the "mainsheet car?" I could show you a picture of mine, but yours might look different. The "traveler track" moves across the beam of the boat. Sometimes it's across the cabin top, as mine is. Sometimes it's in the floor of the cockpit, right in front of the companionway. Sometimes it's at the back of the boat. Some smaller boats don't have travelers -- my little 25' Irwin didn't have one.

If you have a traveler, you release both traveler lines, and then pull on the leeward line. If the wind is coming over your port side, you pull on the starboard traveler line, and move the sail controls to starboard. This causes "twist" at the top of the sail. You can spot this because the curve of the leech -- the back edge of the sail -- will now have a more exaggerated curve in it, especially toward the top. This makes the sail more inefficient. It's an easy and quick way to depower your mainsail. If the gust was significant enough to make your boat heel too much, she should immediately settle down and heel less, what the author means by "keeping heel down."

But what does a "more balanced boat" mean? Without getting technical, the more balanced the boat is, the less physical exertion it takes to steer the boat. But it *also* means that the boat is more in control. Using the traveler to move the sail to leeward is a quick and effective method to "spill the mainsail" so it can't hold as much wind. You have effectively, temporarily turned your mainsail into a smaller sail.

OK, so what does "back your blocks" mean? The sheets for your headsail come back to the cockpit after being led through a moveable block that sits on a long track. The position of that block can dramatically affect the shape of your headsail. When the winds pick up, adjusting your mainsail as described above may not be enough to get your boat back in balance and sailing easily (which you judge easily by the amount of effort needed to steer her). If you move those blocks back toward the stern, you ... twist the headsail as well, causing wind to spill out of the top, and in effect, making your headsail smaller. 

Now, this isn't as easily (or as safely) done as adjusting the traveler. To move the blocks you have to first notice where the load is. Which is the working sheet? Well, in the scenario above, the wind was coming across the port side of the boat (a "port tack"). This makes the STARBOARD sheet carry the load. The port sheet is slack. So that's the one to adjust first, even though it won't change the sail. Slide it back as much as you think you need. Now, if you've gone out and practiced, you'll be able to make an educated guess. If you haven't practiced that yet, then your rule of thumb might be -- the stronger the gusts are, the more you should move it back.

Now you have to move the loaded block, and that can be more dangerous. You have two choices.

First choice is to switch to a starboard tack. The problem with that choice is that tacking isn't a lot of fun in rough water and winds that are overpowering your boat. It's not impossible, but make sure there's no one in the cabin and that everyone is secure (they do have PFD's on, right?) After the tack, your starboard sheet will be the "lazy" sheet and you can move the block toward the stern easily.

If tacking seems like a bad idea (whoever works the sheet is going to have to pull hard and fast on the new working line, and the helmsman should watch his or her progress, and not complete the turn until the new working sheet is under control and tight enough), here is how to move the block while the sheet is under load:

Always remember: ONE HAND FOR YOU AND ONE FOR THE BOAT. Don't use both hands doing this in rough water. 

Step firmly on the working jib sheet FORWARD of the block. Keep the tension on that sheet with your foot, hold on to something firm (not just a life line, but a stanchion or cabintop handhold, or bimini frame if it's very secure), and slide the block back. If you have to do this more than once to make sure you are holding on to the boat, so be it. You can do this twice. 

If you have two people on the boat, that second person should be on the helm. You'll be standing on the high side of the boat, and that will make it easier for you to do this.
 
"3. Reef your Sails
Combine the first two actions with sail reefing. One of the great misconceptions in sailing is that reefing is a heavy weather tactic. Nope--it's a balancing tactic. Reef earlier than you think necessary. Reduce or change out the headsail. Tuck a reef or two in to the mainsail. Reefing keeps the boat on her feet and the helm light as a feather."

 If you're going to change your headsail, please be aware of the weather before you are in it, and change the sail before it's actually needed. Changing a headsail can be extremely dangerous in high winds and/or rough water. When a boat is out of balance, the bow bounces around and moves unpredictably. If you slip up and the sail goes into the water, do you know what you have to do? You have to whip out your knife, cut the sail free and let it go, because a sail in the water at the bow can sink a boat. 

So do it while the winds are low.

Another option is to partially furl your roller furler, but understand that if you do that more than a couple of times it will permanently deform your headsail. This is not something covered by insurance, even though it's weather related. The result is that your headsail will always perform more inefficiently, and your boat will slow down some. Well, that's life -- safety first, but if you pay attention to the weather, you may avoid having to use your headsail in this way.

There's a hidden, important message in all of this: how the helm feels may be your best sign of whether it's time to twist the sails, and if that doesn't do the job, to start reefing.

What this all means is that you mustn't be shy about taking your boat out, little by little, in stronger winds than you're used to. If you're used to 10 mph winds, take her out in 15. Sail her on all points of sail. Make judgments about whether your boat needs to be reefed at this point. Some smaller boats probably should be reefed at 15 mph. 

Then take her out at 18 mph, and then 20, etc. Most people are not this methodical (and it's not typical for me, but I realized that sailing was a little more risky for me than some other people, and I just made myself do it. I am now convinced it's a good idea for all newer sailors.)

Three simple tips in that article -- simple for experienced sailors, that is. As you take your boat out for recreational cruises, pick one new skill to practice each time. Then when the ship hits the fan, you'll already know how to execute the excellent tips in that article. 



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