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Old 05-05-2017, 08:23   #16
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Re: Atlantic 57 Catamaran called Leopard was recovered

Awesome! A point in our never ending discussions.

Better to live in two upturned hulls for weeks than in one at the bottom of the ocean.

Big bravo for the designer. Very nice craft.

I hope someone can restore her and go sailing again.

BTW Who owns it now, the insurer?

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Old 05-05-2017, 08:51   #17
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Re: Atlantic 57 Catamaran called Leopard was recovered

I thought the pic of the overturned cat with "salvor in possession" was leopard taken in the DR shortly after capsize? At least those pics were in the articles and blogs at the time.
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Old 06-05-2017, 13:59   #18
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Re: Atlantic 57 Catamaran called Leopard was recovered

Quote:
Originally Posted by Boatguy30 View Post
I thought the pic of the overturned cat with "salvor in possession" was leopard taken in the DR shortly after capsize? At least those pics were in the articles and blogs at the time.
More than one of these boats have capsized, and been salvaged. Seems like they have a propensity for being hit by rouge water spouts......
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Old 10-05-2017, 06:09   #19
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Re: Atlantic 57 Catamaran called Leopard was recovered

Does anyone know if there has been a written account of the capsize from the crews perspective. I have heard there was a water spout but, did it just drop out of the clear sky? Or, was there weather going on and they failed to shorten sail? Or, what happen?

I have experienced water spouts on two occasions, once in the Gulf of Mexico and once off Cape Hatteras. In those experiences, I saw the spouts and the weather in the distance and determined which way I needed to go.

So, does anyone no the story? I understand the crew were experienced sailors, so something unusual must of happened.
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Old 10-05-2017, 06:50   #20
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Re: Atlantic 57 Catamaran called Leopard was recovered

This video shows one possible capsize trigger.
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Old 10-05-2017, 07:22   #21
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Re: Atlantic 57 Catamaran called Leopard was recovered

That theory is full of gas ( and what comes with it) as far as I'm concerned.
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Old 10-05-2017, 07:22   #22
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Re: Atlantic 57 Catamaran called Leopard was recovered

The easiest, most effective way to sink a submerged submarine is to drop a nuclear depth charge. It detonates below the sub, atomizing the water, and creating a huge cavity. The sub drops into the cavity, and snaps in half or is breached to sink.

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This video shows one possible capsize trigger.
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Old 10-05-2017, 07:38   #23
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Re: Atlantic 57 Catamaran called Leopard was recovered

That video is NOT convincing at all.

They used an OPEN boat.
Even then, they FAILED to sink the boat when it was in the middle of the air bubble field (manmade) with 25% AIR BUBBLES under the boat. It continued to float.

They then position it so the OPEN aft cockpit is subject to water ingress (swamping) as some of the upwelling water was coming over the transom, and TIED the boat to that position and waited and waited and waited for the bubbling water plume to fill the boat, swamping it. The boat was not moving OUT of the bubble field.

A boat like that can be swamped by a single wave that falls within the "Significant Wave Height" for relatively common conditions at sea. It does NOT take a bubble field to sink a boat like that, as open boats swamp in very common conditions.

They mentioned a large commercial vessel "snapping" or breaking its back. But, they chose a boat that is NOTHING LIKE a large commercial vessel. To show how ridiculous that is, they could have chosen an OPEN canoe and gotten the same results (swamping the canoe) without any back breaking.

So, I think that VIDEO is ridiculous. . Even the wording from the "testers" shows they are doing what they can to "prove" their theory for the camera. Hardly objective testing or video.
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Old 10-05-2017, 14:52   #24
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Re: Atlantic 57 Catamaran called Leopard was recovered

Key finding is that the aerated water allowed the "vessel" to lose buoyancy.
The actual sinking is purely for dramatic effect and is not important. But the key finding remains valid. This effect is very well known in engineering as the fluidized bed.
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Old 10-05-2017, 15:27   #25
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Re: Atlantic 57 Catamaran called Leopard was recovered

[QUOTE=Taichungman;2389991}

So, does anyone no the story? I understand the crew were experienced sailors, so something unusual must of happened.[/QUOTE]

The story goes like this.

On delivery, aware of approaching front. jogging along with sheets eased awaiting said front to pass. It was dark and a little cold so the very experienced crew put in place a very sound plan based on their vast experience.

As it was dinner time they decided it was fine to put off reefing the sails for a while and just ease sheets a little more, all retire to the Great Dining Hall, and sit down for a spiffing good meal. As everyone knows you can't possibly function on an empty stomach.

Then the most unbelievable thing happens, how were they to know. The front they were awaiting arrives, complete with a few embedded meteorlogical thingies often found in frontal systems .

They couldn't hear, or feel its approach over the sounds of Bach or the warmth from the Great Halls climate control system, from their superior vantage point around the highly polished dining table.

You gotta feel for them. It could have happened to anyone.
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Old 11-05-2017, 15:44   #26
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Re: Atlantic 57 Catamaran called Leopard was recovered

The whole methane gas sinking ships is simply ridiculous in my opinion, why? Cause there has never, ever been even one sighting of a methane gas discharge of that size, yet when one does happen it apparently sinks ships, with no survivors to tell the tale.
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Old 11-05-2017, 16:10   #27
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Re: Atlantic 57 Catamaran called Leopard was recovered

Looks like we have
Incompetence: 10
Waterspouts: 1
Methane bubble: 0
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Old 11-05-2017, 20:52   #28
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Re: Atlantic 57 Catamaran called Leopard was recovered

Quote:
Originally Posted by UpOnStands View Post
Looks like we have
Incompetence: 10
Waterspouts: 1
Methane bubble: 0
Looks like you got it nailed...think i'll some corn now.
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Old 11-05-2017, 21:02   #29
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Re: Atlantic 57 Catamaran called Leopard was recovered

Wow, everyone passed the gas.....
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Old 11-05-2017, 22:36   #30
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Re: Atlantic 57 Catamaran called Leopard was recovered

Gas never happens unless you smell it.
Its that "if a tree falls in the forest" thing.
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