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#1
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![]() DSK wrote: John Lechmanik wrote: Although I'm a little experienced at sailing, I'm still learning a lot of the little incidental things. Such as pulling out of a dock. Some of the skills that make for successful sailing have nothing to do with actually sailing! But maneuvering a boat is an interesting challenge. Here is the fun part. During this time of the year, the wind comes from a variety of directions. When the wind comes from the east (port side of the boat when in the slip) it's a challenge getting out of the slip. The first time I backed out under these conditions I was just out of the slip, and turning the boat to starboard when the wind pushed the bow back around. No matter what I did, I couldn't get the boat turned into the wind and was being pushed by the wind down the marina. Could you have backed up, stern into the wind, and gotten down the fairway? It looks funny but it works. This is true, for most parts.. A couple of points to keep in mind, please forgive me if you already know these things. The basics always bear repeating.... Know your prop walk. You should have a good sense of how hard the boat will try to swing in reverse and in forward, and whether it will swing more if throttled up gently or if gunned. Usually, gunning it when in gear will produce a short burst of prop walk before the boat starts to accelerate forward (or aft, if in reverse). You can use this effect! Another thing to bear in mind is that from a standing start, or when moving very slowly, the boat will turn *much* tighter one way than the other... when prop walk and helm (prop wash against the rudder) are both pushing the stern the same way. I bet the time you couldn't get the bow into the wind, you were trying to turn it the "wrong" way. Sounds like it. The bow always tries to swing downwind. If you use prop wash (as opposed to prop walk) to try and force it into the wind from a standing start, or while movng slowly, you will fail if the wind is above a certain strength (another factor to get a feel for) and you will always end up going considerably sideways. In reverse, you have no prop wash effect. You're in free fall until the boat gains enough way that flow over the rudder will steer her. Not so Doug.. You can obtain quite a force sideways not moving at all and the rudder not being a factor at all. Boats have considerable "rotational momentum" so get her turning the way you want her to go, before sticking it in reverse. You can use this effect to counter prop walk and back up straight.... people who claim you can't back up sailboats straight don't know enough to be worth listening to IMHO... Agreeded, What is important is learning when flow across your rudder overpowers walking. One could push off the stern opposite of the way the props walks hard throttle blast to slow to allow flow over the rudder to overtake walk and point the require way if walk in not the way you want to turn. Could also power a 360 with walk and wash, looks funny, but not as funny as backing the whole length of the cut. The best thing to do is practice. Take the boat out in a more open area, where you can practice maneuvering under power. Note how long it takes to bring the boat to a stop, that's the first and most basic step. Note your RPMs and how the boat accelerates at different throttle settings, also how much prop walk there is. Sit still for a while and note how the bow swings downwind. Practice turning both ways, both with and against prop walk, practice backing up straight, practice backing up in a controlled 'S' with some guide mark(s). The key is to gain some confidence in how the boat will react, how to make it do what you want consistently. A big part of this is to observe and know what the boat wants to do, and use those tendencies as much as you can. Hope this helps. And the basic knowledge of spring lines... and the proper times and ways to use them, should keep you out of trouble in high winds. Joe Fresh Breezes- Doug King |
#2
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In reverse, you have no prop wash effect. You're in free fall until
the boat gains enough way that flow over the rudder will steer her. Joe wrote: Not so Doug.. You can obtain quite a force sideways not moving at all and the rudder not being a factor at all. Right, we were already discussing prop walk (and perhaps 'kick' would be a better term for the prop stream against the rudder than 'prop wash' since it might be confused with 'prop walk'). The issue is that when you start backing down from minimal way forward, you have quite limited options to steer the boat until it gains enough sternway to steer by the flow over the rudder. Whatever the wind & prop walk are going to do to you, you have to allow for in advance... and maybe counter with a little pre-rotation of the boat as you come to a stop. That's what I meant by "free fall." The two keys to maneuvering IMHO are 1- thinking ahead and 2- being totally familiar with your control of the boat & it's reactions. DSK |
#3
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![]() DSK wrote: In reverse, you have no prop wash effect. You're in free fall until the boat gains enough way that flow over the rudder will steer her. Joe wrote: Not so Doug.. You can obtain quite a force sideways not moving at all and the rudder not being a factor at all. Right, we were already discussing prop walk (and perhaps 'kick' would be a better term for the prop stream against the rudder than 'prop wash' since it might be confused with 'prop walk'). The issue is that when you start backing down from minimal way forward, you have quite limited options to steer the boat until it gains enough sternway to steer by the flow over the rudder. agreeded Whatever the wind & prop walk are going to do to you, you have to allow for in advance... and maybe counter with a little pre-rotation of the boat as you come to a stop. That's what I meant by "free fall." Oh OK... Nothing like a capt Ron style docking, Half speed 45 degree angle to the dock then full astern...walking your stern in(free fall)to a perfect butterfly soft landing. The two keys to maneuvering IMHO are 1- thinking ahead and 2- being totally familiar with your control of the boat & it's reactions. 3- practice Joe DSK |
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