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Swinging on anchor |
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Relentless
Commander Joined: 17 April 2018 Status: Offline Points: 132 |
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Posted: 28 September 2018 at 15:06 |
I’ve spent most of the season on anchor, rarely pick up a mooring ball, and as I type, I’m pinned down with gusts coming in around 25-30knts.
I’ve always noticed that I seem to swing a lot more than other boats. Not around the anchor circle but mostly in place. The boat will point right, then left, then right, left.... Other boats don’t seem to swing nearly as much. Maybe it just seems like I swing a lot from the perspective of being on board. Do you notice excessive swinging? I typically use about 6:1 scope. I shoot for 5:1, then drop a little extra for good measure, then connect my anchor bridal... |
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scott
Commander Joined: 28 September 2014 Location: United States Status: Offline Points: 99 |
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I've found the same with my 415. I've read elsewhere that this is common to higher-performance hull shapes, with fin keels and spade rudders.
I've been able to dampen my swinging a bit by locking the rudder wheels hard to one side or the other.
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Scott
Sailing Mer, Hanse 415, Hull #85 Seattle |
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Wayne's World
Admiral Joined: 18 July 2012 Location: Cruising Status: Online Points: 1111 |
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Rob,
In strong winds we often get a swing of about 130 degrees. As Scott mentioned it appears a lot of newer boats swing a lot at anchor. We ended up buying a Anchor Sail from the US which reduces the swing arc by at least 50%. This also means there is less snatching of the chain and anchor. The one we bought is called a FinDelta and was supplied by Banner Bay Marine. |
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Wayne W
Cruising, currently in the Caribbean and will head across the Pacific early 2024 |
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Gale Force
Captain Joined: 26 June 2018 Location: Sri Lanka Status: Offline Points: 278 |
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Recently spent a night at anchor with gusts unto 35 knots and I would say we were swinging wildly while others seemed quite calm around us.We could really feel it down below and especially when the direction changed.However the anchor held fast all night.The experience really gave us a big boost in confidence
Duncan
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cwetto
Commander Joined: 15 June 2009 Location: sailing Med Status: Offline Points: 127 |
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More swing on anchor is feature of higher-performance flat bottom hull shapes, with fin keels and spade rudders, not a bug :) High freeboards are also benefit for more swing. Thats why all Hanse designs swing more than others :) You can reduce swing fixing rudder in neutral position. We never used anchor sail, but interested in experinces.
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Cwetto
Hanse 540e 2007, sailing Med |
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Relentless
Commander Joined: 17 April 2018 Status: Offline Points: 132 |
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That is very interesting Wayne!!! I haven’t seen one of those yet. Thank you for sharing!!
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Jeremy
Commander Joined: 28 February 2018 Location: Auckland NZL Status: Offline Points: 91 |
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Hi,
We have a 415 and sitting in 30 knot gusts we ride up on the anchor, heal violently, then repeat the process on the other tack. Not easy sleeping. I have a 2.5ft diameter conical drogue with a stainless steel wire hoop at the opening, its designed to limit speed. I hang this off the stern cleat about 1m under the water. I've tested this in 12 to 15 knot gusts at anchor and it seems to be effective in dramatically slowing and minimizing the 'sailing at anchor' motion. Yet to try it in more wind. A basic $30 fishing drogue may have the same effect. Maybe worth a try! Jeremy
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Mark&Catherine
Admiral Joined: 18 January 2013 Location: Turkey Status: Offline Points: 1200 |
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we have a simple triangle sail that we mount on the backstay in a similar place to Wayne's posh one, it was given to us. Even the single sheet reduces swinging substantially, but the difficulty is in securing the sail in place, what ever we do it takes a while for the wind to 'catch' the new side as we have some boom movement and the 'clew' has to be supported somewhere in mid air between the split back stays. Nevertheless it works, I imagine a nice two sided one like Wayne's is an excellent addition. We don't mind the swinging unless it gets really extreme, but the world does wizz past when you look up out of the companionway sometimes
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385 ubulukutu sail number GBR 3350L in Turkey and Greece with Mark and Catherine
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Infinity III
Sub Lieutenant Joined: 14 June 2015 Location: Oslo Status: Offline Points: 1 |
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This is our anchor sail. Made by Zar Sails in Norway. Works perfectly and easy to hoist in less than 5 minutes.
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Infinity III
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Black Diamond
Vice Admiral Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 923 |
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Steve Thurston at Quantum Thurston in RI is making one for us this winter. They work really well, but there are some less-than-useful ones out there for a cheap price. Be careful. Much of this has to do with HUGE freeboard and the flat-bottom performance hull shape. Having been on anchor and mooring in gales we swung a bit, but not more than I expected. The riding sail will reduce this, but I expect that the hull/keel configuration is still going to cause some.
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Rick
S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI |
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