There's More Than One Way To Clear A Low Bridge - SailNet Community
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post #1 of 11 Old 07-22-2013 Thread Starter
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There's More Than One Way To Clear A Low Bridge

I'd say he's done this before...

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post #2 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

Repost, but still a good one.
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post #3 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

This has been posted here before. It's pretty impressive! Imagine the stress on the rigging.

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post #4 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

I was told that these are pros. You can pay them to get your boat under the bridge.

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post #5 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

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Originally Posted by jimgo View Post
This has been posted here before. It's pretty impressive! Imagine the stress on the rigging.
Nah, the boat's built to take it, since the load should be roughly equivalent to those required to induce the same angle of heel under sail... Only difference would be in that it is solely concentrated in this case on the mainmast, rather than possibly being distributed between main and mizzen under sail...

Given the weight of the bags, I would guess there could be a higher degree of compression at the base of the mast, but in theory to load on the shrouds should be no greater...

Last edited by JonEisberg; 07-22-2013 at 11:23 AM.
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post #6 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

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I was told that these are pros. You can pay them to get your boat under the bridge.
You may be thinking of the guys at Indiantown who help boats clear the Port Mayaca RR bridge... This is definitely not them...

I believe Dave on AUSPICIOUS knew the owner, who has sadly since passed away... He was a member of the SSCA, and I believe the first time he employed this trick, was in an effort to run up the ICW from Ft Pierce to attend an SSCA Gam in Melbourne... This vid, however, appears to have been taken at the bridge in Coinjock, NC...

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I'm the guy who watched this and took the pictures. I have to say it was a very professionally executed operation. Just the captain and his wife aboard. As they approach the bridge, they release the bags from the base of the mast and execute a slight turn (to port in this example) to start the bags moving off the starboard beam.

As they get closer they ease the sheets that hold the bags to the boat. When the bags touch the water the mast height is 60'.

David is a pretty cool guy. He rigged this as Noel was approaching the eastern US. It worked so well that he figured he could go inside and visit the places he had been missing.

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post #7 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

The load is just Rm=heeling mom.
The load at the masthead would be similar to reaching hard with a spin up but far less dynamic. I don't see a problem. Not that I would have the balls to try it.

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Last edited by bobperry; 07-22-2013 at 11:43 AM.
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post #8 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

what a pain in the ass. this is alot easier. Little more stress on the rig though.

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post #9 of 11 Old 07-22-2013 Thread Starter
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Re: There's More Than One Way To Clear A Low Bridge

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Originally Posted by jimgo View Post
This has been posted here before. It's pretty impressive! Imagine the stress on the rigging.
I hadn't seen it here.

I thought the expression on the guy at the helm said it all - been there, done that. And the way he cranked in the weights after passing under told me this whole process has had some solid engineering or a lot of trail and error or some of both.

As for the stress on the rig, his rails were just touching the surface, a position I'm sure not unusual to that boat. So I would imagine the stresses created wouldn't be that out of line with what the rig was designed to handle, just that all the pull is at the top of the mast.
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post #10 of 11 Old 07-22-2013
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Re: There's More Than One Way To Clear A Low Bridge

hardcore right there
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