sail-world.com
 
 
News Home Boats for Sale MarineBusiness-World Sail-World Racing Cruising Int Magnetic Is RW Photo Gallery FishingBoating
Sail-World.com : US Coast Guard resume search for Cheeki Rafiki life raft and sailors
US Coast Guard resume search for Cheeki Rafiki life raft and sailors

'Hull sighting: On Saturday, a cargo vessel, the MV Maersk Kure, spotted and photographed an overturned hull, pictured, which matched the description of the Cheeki Rafiki but reported no signs of people on board'    Maersk Kure

The British Prime Minister David Cameron has announced that the search for the four missing crew from the 40ft Cheeki Rafiki is to be resumed.

The search was initiated after a request was made by the UK government.

Previously U.S. Coast Guard Capt. Anthony Popiel, chief of response for the first Coast Guard District, explained that the US Coast Guard had ended their search after 53 hours, based on a 20 hour survival time.

A spokeswoman for the US Coast Guard confirmed to the BBC that the 'planning process' for the renewed effort to rescue the men began just after 7:30 local time (12:30 BST).

The area in which the search for the Cheeki Rafiki is believed to be focussed -    
'It'll be co-ordinated by air and sea as before but the details are still being worked out,' she told BBC News.

She said she could not at this stage say why the search had resumed. The coast guard had previously said it would only start searching again if new information came to light.

Aircraft are flying from North Carolina to the coastguard in Boston where they are expected to arrive later.

Apart from the huge pressure mounted via the 195,000 petitioners and a lot of very famous sailors, there is perhaps another reason buried in the initial Coast Guard statement.

Here is an extract of that statement: ' Seas were 15 feet with winds surpassing 50 knots. The air temperature was 59 degrees and the water was 60 degrees.

'When conducting extended searches, the U.S. Coast Guard uses a survivability model that takes into account weather conditions, emergency equipment, and the anticipated condition of the people for whom we are searching. Based on the extreme conditions at sea, but assuming best-case emergency equipment, the estimated survival time past the time of distress was approximately 20 hours. Crews searched for 53 hours.'

Its seems likely that a 20 hour survival time assumes the four British sailors were in the water, not in the 12 man life raft that the Beneteau First 40.7 Cheeki Rafiki was carrying.

Because a quick cross check with the survival charts more commonly used in the sailing community suggests that survival time assumes the four British sailors were in the water, not in the 12 man life raft that the Beneteau 40.7 Cheeki Rafiki was carrying. There have been many cases where sailors have survived in life rafts for weeks even months.

Probability of Survival Decision Aid (PSDA) Graphic User Interface (GUI) -    

The U.S. Coast Guard has mandated the use of a highly sophisticated Probability of Survival Decision Aid (PSDA) predictive model in determinations of survival times in the water and it seems likely the quite short survival time has come from that software.

A 12man liferaft in which the four crew are hoped to have boarded. -    
Now the USCG has been confronted with what the fact that time line is irrelevant if the Cheeki Rafiki four in 12 man raft?

We note that is not seriously addressed by the PSDA which does however note 10 days in a life raft as being quite possible?

Given the the long period in which the four British sailors knew the boat was in danger of sinking, its clear that they would have been wearing flotation devices and the life raft would be been on deck ready for deployment.

So now the USCG will put assets back into a search for the life raft and hopefully the four British sailors. The Australian Navy sent a warship 1300 nm to look for and find Tony Bullimore 500 nm from Antarctica, it should be possible to find closer ships in the mid-Atlantic.

We hope and pray the USCG and their searcher will be successful.

In the far less sophisticated data set, the survival time for a person in cold water is limited as indicated in the table below:

Water Temperature Exhaustion Time Death Time
(oF) (oC) (hours) (hours)
80 27 unlimited unlimited
70 - 80 21 - 27 3 - 12 3 - unlimited
60 - 70 16 - 21 2 - 7 2 - 40
50 - 60 10 - 16 1 - 2 1 - 6
40 - 50 4 - 10 0.5 - 1 1 - 3
32.5 - 40 0 - 4 0.25 - 0.5 0.5 - 1.5
32.5 0 < 15 min 15 - 45 min


For the latest story and backgrounder, including graphic of the liferaft believed to have been deployed, see the BBC report click here .

Cheeki Rafiki, a 40ft Beneteau missing in the Atlantic -  stormforce.biz  


by Rob Kothe, Sail-World.com


  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=122328

1:01 PM Tue 20 May 2014GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







Sail-World Cruising News - local and the World





Flags at Sea, an infographic by John Tissott by Anna Parker and the Sail-World Team,




















Our new Cruising Editor editor remembers his first offshore adventure by David Schmidt, Sail-World Cruising Editor, Seattle, WA






Pacific Circuit Rally - 2015 by Island Cruising Association New Zealand,


All Points Rally departs this November by Island Cruising Association New Zealand,






World ARC 2014 reaches Australia by World Cruising Club,


A Mooring in Iceberg Alley by Rebecca Jackson,








Predictwind helps you pick the best time to depart by Richard Gladwell Sail-World.com/nz,


















Costa Concordia - the $2.25 billion salvage operation ready to begin
Northern Scotland: Voyage to Orkney and Shetland Isles, more photos *Feature
4.8 million Legos all at sea
No tiller sailing - how to steer using just the sails + Video
Boaties' heartbreak as storm rages
FIXMYBOAT.com.au – Browse, compare and decide
'Honey, Let's Go Boating!' next best-seller for Finkelstein *Feature
2014 Brisbane Boat Show - Set to add new features
In search of the Duroc
Tranquil, colourful and funky, Genoa Bay is a must stop for West Coast *Feature
Scientist pioneered tracer to reveal hidden ocean flows
Dredging activity near corals can increase frequency of diseases
World ARC heading out of the Pacific
Understanding the Ocean's role in Greenland Glacier melt
Dangerous conditions for boating on entire NSW Coast
Three Defensive Docking Strategies for Sailors
Revealing report on Search for American yacht Nina released *Feature
Dangerous conditions for boaters Byron Bay to Eden
PredictWind's Weather Routing opens your navigation options - try it!
Auckland on the Water Boat Show: Two new Bavaria yachts on display
AYSS PacificNet/Tahiti voted a success!   
Sail-World Cruising Founding Editor Nancy Knudsen says farewell   
Book review: Weather - you like it or not   
Research shows marinas tops for economic, social benefit   
Vaavud launches generation 2 wind meter   
The drama begins - North West Passage sailors rescued from ice   
Entering an unfamiliar bay - decision time   
Baby Nemos finding their way home   
High Latitude Sailing - Book of the Week   
Will the Olympics make a difference to Rio pollution? *Feature   
Blue Planet Odyssey, around world rally, begins   
Africa Europe Cruising Challenge now open for entries   
The real ‘Supermoon’ story   
Warm and noisy welcome for Oceans of Hope in La Rochelle   
Sailor rescued after Facebook call for rescue   
Solo sailing star's passion = busy environmental schedule   
El Niño (Part 2). Effects on the Pacific Ocean   
Northern Scotland: Voyage to Orkney and Shetland Isles (Part 1)   
Northern Scotland: Voyage to Orkney and Shetland Isles, photos   
The Galley Guys' favourite shrimp recipe   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph, contact the photographer directly.
XLXL WAS Cru SH
LocalAds   DE  ES  FR  IT