Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 26-04-2018, 07:18   #1
Registered User

Join Date: Mar 2013
Location: west coast of Thailand
Boat: Mason 44
Posts: 180
How to upRight a 57' cat

Hi

I am shocked when I came across this youtube on the rescue of 57' catamaran.

https://www.youtube.com/results?sear...d&pbjreload=10

A 57' cat is a huge boat and I have never heard of big cat capsized.

Is there a way of turning the monster back up with some sort of floatation bag inflated at the top of mast that can be detached upon self righting?

I read some where in the Voyage for Mad Men, one of the sailor had such a device.

So the million dollar question is

1. How would you handle the same situation with a capsized 57' cat in the middle of nowhere?

2. Is there a self righting device for cat? maybe a bag that is kept inside the boat for such an unfortunate event, like having a life raft.

Your thoughts.

Eric
__________________

ericoh88 is offline   Reply With Quote
Old 26-04-2018, 07:30   #2
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 18,410
How to upRight a 57' cat

Not to be sarcastic, but the sea conditions likely required to capsize a big cat I would assume preclude any righting attempts. In fact Iíd assume you would be in a real survival situation, hopefully in a life raft having popped the EPIRB and awaiting rescue.
These things donít go over in calm weather
By the time the weather abates enough for recovery, the condition of the boat may not be so good?
__________________

a64pilot is offline   Reply With Quote
Old 26-04-2018, 07:31   #3
Marine Service Provider

Join Date: Aug 2012
Posts: 232
Re: How to upRight a 57' cat

I think there is no chance to turn it back up. Thats the disadvantage of cruising cats. However, at the other hand they have no heavy keel which makes the boat sinking when having a leak.
Most of the cats typically do not sink while monohulls can sink within minutes.
myocean is offline   Reply With Quote
Old 26-04-2018, 07:38   #4
Registered User
 
Bill O's Avatar

Join Date: Jul 2015
Boat: Bruce Bingham Andromeda 48
Posts: 235
Re: How to upRight a 57' cat

Not a cat person. Maybe something like this but using a large powerboat or the rescue boat.



Bill O.
__________________
Bill O.
KB3YMH
http://phoenixketch.blogspot.com/
Bill O is online now   Reply With Quote
Old 26-04-2018, 07:38   #5
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 6,226
Re: How to upRight a 57' cat

A bag alone will bring the mast back to the surface (assuming the mast survived the capsize in the first place) but will not right the boat. Usually when these big boats capsize, the mast is lost and the boat is towed to port upside down for a crane to right. There are always exceptions, that involve pulling in two opposite directions or enough power in one direction to pull the boat back over.
Sailmonkey is online now   Reply With Quote
Old 26-04-2018, 07:44   #6
Registered User
 
Franziska's Avatar

Join Date: Mar 2011
Location: Harlingen, The Netherlands
Boat: Woods Mira 35 Catamaran
Posts: 816
Re: How to upRight a 57' cat

There are two options.

When weather is calm again, tow inverted to next port and use one or two big mobile cranes.
It's a slow process, as the water needs to drain along the way.
Thats the way its done on the huge ORMA multihull raceboats, but they tend to be light and have big money.

Option two, one can try end over end. With the help of a tug/big powerboat on location. Floatation bags and parachute anchors may help. Usually not attached to the rigging though.

Transverse righting will most lightly cause substantial further damage.
In both cases the rig will most lightly not survive.
Franziska is offline   Reply With Quote
Old 26-04-2018, 08:49   #7
Marine Service Provider

Join Date: Sep 2012
Location: Virgin Islands
Boat: 1999 Leopard 45, 45 foot cat, 1980 Hunter 33, 33 foot monohull
Posts: 560
Re: How to upRight a 57' cat

A number of cats, this size, and also bigger and heavier, have been righted in the BVI post Irma. Some have been afloat, and others ashore, They have all needed either one or two cranes (or more), and have been righted athwartships, as opposed to end over end. In several cases, a major problem has been that their structures may not be strong enough to support their weight, including considerable water. The crane straps cut into the decks or elsewhere. This is not a project for the timid, at all, but in every case I have seen, the damage is worsened by the process. In some cases the process was to remove boats, and in others it was an attempt to save them for a rebuild.
contrail is offline   Reply With Quote
Old 26-04-2018, 08:54   #8
Registered User

Join Date: Feb 2015
Location: Oakland CA, boat in Mexico
Boat: Morgan 46 ketch
Posts: 382
Re: How to upRight a 57' cat

Quote:
Originally Posted by Sailmonkey View Post
A bag alone will bring the mast back to the surface (assuming the mast survived the capsize in the first place) but will not right the boat. Usually when these big boats capsize, the mast is lost and the boat is towed to port upside down for a crane to right. There are always exceptions, that involve pulling in two opposite directions or enough power in one direction to pull the boat back over.
If cat is totally inverted, as would be the case, how can a flotation device of any size, attached to top (now bottom) of mast, be able to start the sideways motion needed to rotate cat upright? All the flotation force is in line with the vertical underwater mast.

If a pre-installed bag at top of mast could auto-inflate quickly before top of mast sinks much below surface during capsize, then yes it could return top of mast to surface. But for ocean survival conditions it may be better to let the cat go completely inverted and crew can survive inside the hulls.
waterman46 is offline   Reply With Quote
Old 26-04-2018, 09:00   #9
Registered User

Join Date: Apr 2012
Posts: 141
Re: How to upRight a 57' cat

Large floating crane moved by a sea going tug. Not an issue except $$$$ cost could be prohibitive.
oleman is offline   Reply With Quote
Old 26-04-2018, 09:17   #10
Registered User
 
Franziska's Avatar

Join Date: Mar 2011
Location: Harlingen, The Netherlands
Boat: Woods Mira 35 Catamaran
Posts: 816
Re: How to upRight a 57' cat

@contrail

On shore with big cranes you can take both approaches.

Atwarthships causes usually more damage because precisely what you describe happens, the belts cut the boat up.

If one would attempt it at sea I'd not favour to try transversal.

Its a huge effort in any case!
Franziska is offline   Reply With Quote
Old 26-04-2018, 09:37   #11
Registered User

Join Date: Sep 2014
Location: Manila, California
Boat: Cape George pilothouse 36 and a Cape Dory 25
Posts: 346
Re: How to upRight a 57' cat

I recall that in the 70's that the USSR righted the racing trimaram Gulfstream, or Gulf Streamer, after it had flipped over and drifted for months or years. I am too lazy to google the actual details. The book "Singlehanded Sailing" devoted a chapter to preventing multihulls from turning turtle to their more stable position.
fatherchronica is offline   Reply With Quote
Old 26-04-2018, 09:53   #12
Registered User
 
Sailshabby's Avatar

Join Date: Jan 2011
Location: Deltaville, VA
Boat: Baba 40
Posts: 173
Re: How to upRight a 57' cat

I’ve dropped my big cat (Maine Coon) numerous times and he’s always landed right side up. This ‘fake news’ crap has got to stop!
Sailshabby is offline   Reply With Quote
Old 26-04-2018, 10:19   #13
Registered User

Join Date: May 2008
Posts: 27
Re: How to upRight a 57' cat

Large multihulls are best righted bows over stern , towed from a bridle attached to bows. See Jim Browns book 'The Case for the Cruising Trimaran"
Slainte1 is offline   Reply With Quote
Old 26-04-2018, 10:46   #14
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 6,226
Re: How to upRight a 57' cat

Quote:
Originally Posted by waterman46 View Post
If cat is totally inverted, as would be the case, how can a flotation device of any size, attached to top (now bottom) of mast, be able to start the sideways motion needed to rotate cat upright? All the flotation force is in line with the vertical underwater mast.

If a pre-installed bag at top of mast could auto-inflate quickly before top of mast sinks much below surface during capsize, then yes it could return top of mast to surface. But for ocean survival conditions it may be better to let the cat go completely inverted and crew can survive inside the hulls.
In a perfectly static environment this would be true. Our environment is not static. With enough flotation and time it will come around.....if the mast survives.
Sailmonkey is online now   Reply With Quote
Old 26-04-2018, 11:48   #15
Marine Service Provider

Join Date: Sep 2012
Location: Virgin Islands
Boat: 1999 Leopard 45, 45 foot cat, 1980 Hunter 33, 33 foot monohull
Posts: 560
Re: How to upRight a 57' cat

Quote:
Originally Posted by Franziska View Post
@contrail

On shore with big cranes you can take both approaches.

Atwarthships causes usually more damage because precisely what you describe happens, the belts cut the boat up.

If one would attempt it at sea I'd not favour to try transversal.

Its a huge effort in any case!
I wasn't making a recommendation, simply relaying what I have observed in the considerable number of large catamaran rightings that have needed to be done here in the BVI, post Irma, by salvage companies. However, in my opinion, the stress is overwhelming no matter what way you do it. There are tons of water aboard! On land, it's very different.
__________________

contrail is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cat vs Cat vs Cat which one to buy? C-man77 Multihull Sailboats 84 03-10-2015 20:07
For Sale: Stainless Steel Upright Ice Trays petedd Classifieds Archive 1 16-06-2015 14:51
Can I Paint And Work On Mast While Still Upright And Attached To Boat? miller83 Deck hardware: Rigging, Sails & Hoisting 7 27-08-2014 13:30
Sea Chase Cat, or similar large cat...? CSY Man Multihull Sailboats 1 08-11-2004 09:25



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:51.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.