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Weight bag to induce list for bridge clearance

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NautiC25
Admiral

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USA
957 Posts

Response Posted - 04/08/2013 : 07:44:15

I think you're going to need a lot more weight than you think to cause any heel. Maybe a swinger with the keel up wouldn't be as bad. But, I've tried pulling on the halyard to cause the boat to heel in the slip, and it required a lot of pulling force to get it to heel at a significant angle.

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Voyager
Master Marine Consultant

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USA
5415 Posts

Response Posted - 04/08/2013 : 18:42:16

Think this was mentioned before, but I'd prefer not to place an angular load on my halyard sheaves.
Instead I'd prefer to rig something from the backstay or upper shroud. I've rigged an icicle hitch to my backstay which is incredibly strong. Will it hold up a counterweight for a 1700# keel? Hmmm... who knows?

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ftworthsailor
Captain

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279 Posts

Response Posted - 04/08/2013 : 20:07:43

Awww. I was hoping to hear more support for the lift bag full of water idea. Only because the North Texas lakes that I have been sailing on get very shallow at times and now that I have a fixed keel boat, I wanted to devise a sure fire method for getting off the sand bar or reef point without having to wait for some big strong power boater to come and YANK me off the bar.

Is there a better way to list you boat if you manage to run aground?

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redviking
Master Marine Consultant

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1771 Posts

Response Posted - 04/09/2013 : 05:54:11

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by ftworthsailor
 Awww. I was hoping to hear more support for the lift bag full of water idea. Only because the North Texas lakes that I have been sailing on get very shallow at times and now that I have a fixed keel boat, I wanted to devise a sure fire method for getting off the sand bar or reef point without having to wait for some big strong power boater to come and YANK me off the bar.

Is there a better way to list you boat if you manage to run aground?

<hr height="1" noshade id="quote"></blockquote id="quote">

Halyard to kedge anchor.

Sten

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Voyager
Master Marine Consultant

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USA
5415 Posts

Response Posted - 04/09/2013 : 20:14:25

Pray for rain?

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ftworthsailor
Captain

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USA
279 Posts

Response Posted - 04/09/2013 : 20:20:22

I do.... but I am also hoping that the current dredging activity at our lake will not only remove the tree trunks that I often find, but the upper lakes will dump tons of water into our reservoir and raise the water level at least 2 feet. Then I can use the club's ramp to launch my boat.....

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cshaw
Captain

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USA
460 Posts

Response Posted - 04/10/2013 : 15:23:38

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by ftworthsailor
 Awww. I was hoping to hear more support for the lift bag full of water idea.
<hr height="1" noshade id="quote"></blockquote id="quote">FortWorth,

I am still planning on building a heeling bag for Confetti, its just not high on the list till this summer when I will do more cruising towards the north and have to clear a couple of bridges that are only 35ft.

I am planning on using my main halyard to carry the load, and the boom as a gin pole to hold the weight outboard, using my boom vang as a preventer to keep the boom forward against the aft shroud. I will fill and empty the bag while the boom is swung close inboard, which gives me access to the bag, but also helps minimize the halyard friction against the sides of the main truck. The halyard swings out a long way anyway when you are on a broard reach or run, but the halyard is not running then like it would be hoisting the bag.

Will be interesting to see how much weight it will take to heel her over enough to clear the 35ft bridge! I did an inclining experiment many years ago when I wrote a paper on sail area vs wind velocity for our club. I should try to find it (probably long gone however), but the angle of heel was not huge for the experimment.

Cheers!

Chuck

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ftworthsailor
Captain

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USA
279 Posts

Response Posted - 04/10/2013 : 17:25:21

cshaw:

Ive been watching some of the videos regarding keeling a sailboat over using weighted bags, etc so would be interested in hearing how your idea works. My only thought is that the gin pole wouldn't allow the weight to swing out farther away from the side of the boat in order to draw the boat over. Just thinking....

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cshaw
Captain

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460 Posts

Response Posted - 04/11/2013 : 08:00:38

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by ftworthsailor
 cshaw:

Ive been watching some of the videos regarding keeling a sailboat over using weighted bags, etc so would be interested in hearing how your idea works. My only thought is that the gin pole wouldn't allow the weight to swing out farther away from the side of the boat in order to draw the boat over. Just thinking....
<hr height="1" noshade id="quote"></blockquote id="quote">

FWorth,

Well, that would be true if the boom would not rise. The idea is the booom gives more moment arm initially, to get the boat starting to heel, and as the boat heels the boom gets closer to the water, but about that time the harness on the bag two-blocks against the block on the end of the boom, and you let the boom start rising (the boom vang is not on at that time, but the downhaul is to maintain positive control of the inboard end of the boom.

Another approach (to allow using less weight) that was shared with me was to not run the halyard thru an enclosed sheeve at the end of the boom, but a simple fork, then if the boat heels enough to want to swing the line out further, its does, and you simply pull the boom back inboard. I do not particularly like that approach since I want to maintain more positive control of the weightbag.

We will be experimenting with this on my Cat 25, and also on an ODay 32 and let folks know what we find out! Should be fun!!!

Chuck

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Prospector
Master Marine Consultant

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Canada
3159 Posts

Response Posted - 04/11/2013 : 08:53:51

Chuck - do you have wire halyards? If so, is there any concern with them jamming during the operation?

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cshaw
Captain

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USA
460 Posts

Response Posted - 04/12/2013 : 17:38:46

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Prospector
 Chuck - do you have wire halyards? If so, is there any concern with them jamming during the operation?
<hr height="1" noshade id="quote"></blockquote id="quote">

Hi Prospector! Nope, I got rid of all the wire halyards many years ago! No reason to use wire when there are such good rope halyard meterials out there! I also use 3/8 halyards not for strength but to be easier on my hands (personal preference since 5/16 would be fine strength wise). I suspect the larger halyards would he hard to get jammed outside the masthead sheeve.

Good question though!

Chuck

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mrapkins
Navigator

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USA
124 Posts

Response Posted - 04/16/2013 : 07:25:40

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by redviking
 <blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by ftworthsailor
 Awww. I was hoping to hear more support for the lift bag full of water idea. Only because the North Texas lakes that I have been sailing on get very shallow at times and now that I have a fixed keel boat, I wanted to devise a sure fire method for getting off the sand bar or reef point without having to wait for some big strong power boater to come and YANK me off the bar.

Is there a better way to list you boat if you manage to run aground?

<hr height="1" noshade id="quote"></blockquote id="quote">

Halyard to kedge anchor.

Sten
<hr height="1" noshade id="quote"></blockquote id="quote">

Sounds like a recipe for pulling the halyard off the sheave. Has anyone ever actually tried this?

Edited by - on

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