Rambler 100 lost keel capsized - all rescued - Page 4 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Like Tree3Likes
Reply
 
LinkBack Thread Tools
  #31  
Old 08-18-2011
SloopJonB's Avatar
Senior Moment Member
 
Join Date: Jun 2011
Location: West Vancouver B.C.
Posts: 10,616
Thanks: 56
Thanked 48 Times in 45 Posts
Rep Power: 4
SloopJonB will become famous soon enough
Quote:
Originally Posted by tdw View Post
Sloop,
If memory serves Autissier's first boat, and also the Englishman's whose name I forget who was plucked from the ocean south of Oz were both conventional keels as was the AC boat (one of the Australians) that played fold-a-boat. I don't know the Bavaria story so cannot comment.

My point was that I don't believe the concept is unsound and for mine boats like Leopard, Alfa Romeo and Wild Oats seem to have shown that a strong reliable canting keel is possible.

My guess, and it only is a guess, is that more folk have died in cruising boat incidents in the last ten years than in racing, particularly in racing incidents caused by gear failure. Certainly in Australia I know of only one fatal incident involving a racing boat in recent times and that was when Scandia went up on a rocky outscrop south of Sydney. That had nothing to do with gear failure as such.

Anywho, as I said I'd simply ban the bloody things on the basis of environmental vandalism and be done with it.
It seems that you, Puddinlegs and Bent all think I'm too conservative - has anybody passed this news to Rantar?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
Reply With Quote Share with Facebook
  #32  
Old 08-19-2011
blt2ski's Avatar
Senior Member
 
Join Date: May 2005
Posts: 6,659
Thanks: 0
Thanked 18 Times in 17 Posts
Rep Power: 10
blt2ski will become famous soon enough
The conservative vs liberal or what ever, ALL of us have both in us......BUT< it will depend upon WHAT the topic is! Hence why telling RANTar that some are calling one conservative in boat uses/types etc, when in the political spectrum, we might be liberal! So reality is, one is BOTH!

Not that any of this made sense.........

So pudding, are ye on the E33 or the far 39 for FWB in about 45 days or so?

Marty
__________________
She drives me boat,
I drives me dinghy!
Reply With Quote Share with Facebook
  #33  
Old 08-21-2011
ChuckA's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Barrington, RI
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
ChuckA is on a distinguished road
SloopJonB wrote>
Quote:
These razor blade keels with a huge pendulum of ballast at the bottom and a tiny mounting surface against the hull are the problem IMHO - how can they possibly be engineered to take that kind of stress on such a tiny load area?

Combine the super thin, lightweight exotic material hulls with the incredible point loading of those extreme keels and you have a perfect recipe for keel failure, which is what we are seeing.

This sort of knife edge (pun intended) engineering is fine for race cars - you can pull over and walk back to the pits - but is unacceptable for offshore sailboats - people drown too easily.
Fatigue prediction - the prediction of failure due to cumulative structural damage from repetitive loading (well below the ultimate failure load) for "well characterized" materials remains somewhat of an art. The high degree of uncertainty in the load history, and thus the cumulative damage is a very difficult challenge to overcome. Throw in corrosion from the harsh salt water environment, and the difficulty steps up even further. If Rambler 100 had been 'retired' after her record-breaking transatlantic run, her breakthrough performance would have been considered an unqualified success. If she had been taken out of service for a major inspection and refitting, would the potential danger have been detected, repaired and the keel loss avoided? Instead I think she will be remembered for her dramatic, and near tragic ending.
HDChopper likes this.
__________________
Best,
ChuckA
sailing a P28-1 Heart of Gold on Narragansett Bay

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Twitter: @CoastalCafe_NE
Reply With Quote Share with Facebook
  #34  
Old 08-22-2011
Barquito's Avatar
Barquito
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 1,907
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 7
Barquito is on a distinguished road
Just like suspension failure in an F1 car. Sometimes they just go, 'doink'. Obviously, that would not be acceptible in your daily driver. Same with sailing. In the world of 'faster, faster, faster', that has to be expected. However, because there is a lot of trickle-down technology to the rest of us, the question needs to be asked.
Reply With Quote Share with Facebook
  #35  
Old 08-22-2011
smackdaddy's Avatar
Last Man Standing
 
Join Date: Aug 2008
Posts: 12,951
Thanks: 80
Thanked 72 Times in 66 Posts
Rep Power: 8
smackdaddy is a jewel in the rough smackdaddy is a jewel in the rough smackdaddy is a jewel in the rough
Quote:
Originally Posted by Barquito View Post
Just like suspension failure in an F1 car. Sometimes they just go, 'doink'. Obviously, that would not be acceptible in your daily driver. Same with sailing. In the world of 'faster, faster, faster', that has to be expected. However, because there is a lot of trickle-down technology to the rest of us, the question needs to be asked.
I bet you just nailed the last section of the coming incident report:

Quote:
CRITICAL INQUIRY FINDINGS:

Keel went "doink".
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Dawn Treader - 1989 Hunter Legend 40
Reply With Quote Share with Facebook
  #36  
Old 08-22-2011
ChuckA's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Barrington, RI
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
ChuckA is on a distinguished road
Barquito wrote>
Quote:
Just like suspension failure in an F1 car. Sometimes they just go, 'doink'.
Yes, sometimes they just go "doink", but it is not like an F1 suspension.

You can instrument the suspension of a car and drive a variety of F1 courses to characterize the loading envelope, from which engineers can design a minimal weight suspension to drive a given number of miles with a high degree of reliabilty. This is possible becasue the range of loading is well defined and understood.

If you were to design an ocean racer to reliably withstand the full range of conditions that are likely to be encountered, the boat will be heavier and more stable than the extreme machines that are breaking records today, and would be left behind by risk takers who are willing to gamble on a smaller margin of safety.

It would be more like designing an F1 Car, then driving it in the Dakar Rally.

How long would it last?

But if by some miracle it did survive, would you then take it and run the Baha 1000?
__________________
Best,
ChuckA
sailing a P28-1 Heart of Gold on Narragansett Bay

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Twitter: @CoastalCafe_NE
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Four people rescued from capsized sailboat - phillyBurbs.com NewsReader News Feeds 0 07-16-2011 11:40 PM
3 rescued from capsized sailboat - Florida Today NewsReader News Feeds 0 07-10-2007 08:15 AM
Two men rescued from capsized sailboat off LI - WIS NewsReader News Feeds 0 04-16-2007 10:15 AM
Two men rescued from capsized sailboat off LI - WLOS NewsReader News Feeds 0 04-16-2007 08:15 AM
Two men rescued from capsized sailboat off LI - WCNC (subscription) NewsReader News Feeds 0 04-13-2007 08:15 AM


All times are GMT -4. The time now is 04:06 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.