Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-01-2019, 09:17   #1
Registered User

Join Date: Mar 2015
Location: San Francisco Bay area
Boat: Condor Trimaran 30 foot
Posts: 1,159
Racing sailor killed due to splice failure

Sad news on Scuttlebutt Sailing News

A rigger misunderstood the effectiveness of the Brummel splice that wasn't lock stitched. It was being used as a preventer for the main sail boom. It parted and delivered a lethal blow to the neck of a crewman. This happened back in Sept of 2015 but just surfaced (for me) on this web page...hope I am not rehashing...but it is still pertinent information that bears to be repeated again and again due to the high loads that main booms are under in boisterous conditions.

I have provided the link so that you can get a much better idea than my poor writing.
https://www.sailingscuttlebutt.com/w...4_10-07-45.jpg

I have synthetic rigging on much of my trimaran. Apart from the horrific accident....and the loss of human life...i think there is information in this article for all of us to ponder...and absorb
__________________

alansmith is offline   Reply With Quote
Old 11-01-2019, 09:23   #2
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: PORTUGAL
Posts: 23,674
Images: 2
pirate Re: Racing sailor killed due to splice failure

The link just takes me to a photo..
__________________


Born To Be Wild.. Click on the picture.
boatman61 is online now   Reply With Quote
Old 11-01-2019, 09:34   #3
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 6,229
Re: Racing sailor killed due to splice failure

The actual error was in believing that the brummel lock could hold the load without the long tail bury. It is the long bury with taper that provides the strength, and the brummel is just one way to keep the splice from working loose when not loaded.


This was on one of the Clipper Round the World Race boats. A full report is on line by the MAIB.
__________________
Gear Testing--Engineering--Sailing
http://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
Old 11-01-2019, 09:50   #4
Registered User

Join Date: Dec 2011
Location: Fremantle, Australia
Boat: 45' Custom Ted Brewer
Posts: 64
Send a message via Skype™ to Ahquabi
Re: Racing sailor killed due to splice failure

What is the $ to death ratio so far Sir Robin?
Ahquabi is offline   Reply With Quote
Old 11-01-2019, 10:24   #5
Marine Service Provider
 
Snore's Avatar

Join Date: Jan 2011
Location: St. Petersburg, FL
Boat: Tartan 33 and OPB
Posts: 2,370
Send a message via Skype™ to Snore
Re: Racing sailor killed due to splice failure

Quote:
Originally Posted by thinwater View Post
The actual error was in believing that the brummel lock could hold the load without the long tail bury. It is the long bury with taper that provides the strength, and the brummel is just one way to keep the splice from working loose when not loaded.


This was on one of the Clipper Round the World Race boats. A full report is on line by the MAIB.


Agreed. I believe the other part of the failure is shock loading. Would like to see Practical Sailor or one of the manufacturers do a study of shock loading on the spices.

That said, when I first read the article I started doing lock stitches on my Dyneema life lines. Especially if you have Dyneema gates it is impossible to get a long enough bury so stitching them become doubly important.
__________________
"Whenever...it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off- then, I account it high time to get to sea..." Ismael -a link to my delivery website is in my profileó
Snore is offline   Reply With Quote
Old 11-01-2019, 11:30   #6
Registered User
 
AKA-None's Avatar

Join Date: Oct 2013
Location: Lake City MN
Boat: C&C 27 Mk III
Posts: 536
Re: Racing sailor killed due to splice failure

I stitch every splice as a matter of habit.
__________________
Special knowledge can be a terrible disadvantage if it leads you too far along a path that you cannot explain anymore.
Frank Herbert 'Dune'
AKA-None is online now   Reply With Quote
Old 11-01-2019, 12:11   #7
Sempre Avanti
 
IslandHopper's Avatar

Cruisers Forum Supporter

Join Date: Dec 2009
Location: Queensland, Australia.....
Posts: 1,599
Re: Racing sailor killed due to splice failure

Am guessing this is the article in question and referring to the death of Andrew Ashman during the Clipper Round the World Race of 2015/16...

Scuttlebutt article....

https://www.sailingscuttlebutt.com/2...nked-fatality/

MAIB report and Annexes....

https://www.gov.uk/maib-reports/acci...oss-of-2-lives

Quote:
A recommendation has also been made to Marlow Ropes Ltd (2017/110), the rope manufacturer, aimed at improving the information provided to users on the loss of strength caused by splices, hitches or knots when using high modulus polyethylene rope.
More at PBO in this article dated April 13, 2017 .....

https://www.pbo.co.uk/news/clipper-r...ccidents-52210
IslandHopper is online now   Reply With Quote
Old 11-01-2019, 12:11   #8
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jul 2005
Location: Bellingham
Boat: Outbound 44
Posts: 7,103
Re: Racing sailor killed due to splice failure

Quote:
Originally Posted by AKA-None View Post
I stitch every splice as a matter of habit.
If you use a brummel splice with a long bury then stitching should not be needed. I don't use a brummel, just a long taper and always stitch. In this case failure appears to be due to a lack of room for a long bury.
Corrected article link
https://www.sailingscuttlebutt.com/2...nked-fatality/
Paul L is online now   Reply With Quote
Old 11-01-2019, 12:46   #9
Registered User
 
Suijin's Avatar

Join Date: Feb 2013
Location: Annapolis MD; currently in Luperon DR
Boat: Valiant 40
Posts: 4,424
Re: Racing sailor killed due to splice failure

I make my brummels with a long bury. I don't think I would trust them with just a lock stitch given the weave of the material. Just doesn't strike me as secure.

As far as the accident goes, I never trust my preventer to be failsafe. I generally consider it to be first line of defense against an accidental gybe, but I don't have ultimate faith in it, particularly if the boom gets dipped. That said booms on racing boats are low and you can't keep your head down 100% of the time.
__________________
"Having a yacht is reason for being more cheerful than most." -Kurt Vonnegut
Suijin is offline   Reply With Quote
Old 11-01-2019, 14:53   #10
Registered User
 
AKA-None's Avatar

Join Date: Oct 2013
Location: Lake City MN
Boat: C&C 27 Mk III
Posts: 536
Re: Racing sailor killed due to splice failure

Quote:
Originally Posted by Suijin View Post
I make my brummels with a long bury. I don't think I would trust them with just a lock stitch given the weave of the material. Just doesn't strike me as secure.

As far as the accident goes, I never trust my preventer to be failsafe. I generally consider it to be first line of defense against an accidental gybe, but I don't have ultimate faith in it, particularly if the boom gets dipped. That said booms on racing boats are low and you can't keep your head down 100% of the time.


I didnít mean I rely on a stitch only, but that I always stitch. And I do a long bury as a matter of course.
__________________
Special knowledge can be a terrible disadvantage if it leads you too far along a path that you cannot explain anymore.
Frank Herbert 'Dune'
AKA-None is online now   Reply With Quote
Old 11-01-2019, 15:55   #11
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 6,229
Re: Racing sailor killed due to splice failure

Lock stitching is well proven in testing, is recommended by Samson and Marlow, and is how larger lines are spliced. The load is carried by the tail and there is no difference in security. The brummel or stitching are only to prevent the tail from backing out under zero load.


The mistake was in using ONLY a brummel.


Whether the system was well designed from a load perspective is a separate subject. A contributing factor is the use of a preventer with swept back spreaders, which dramatically increases the leverage. An alternative design seems needed, but workable suggestions are thin on the ground. The best answers seem to be to either square off the boom, so a conventional preventer works, or keep the boom in far enough so that it is retrained by the traveler (not much sheet out).
__________________
Gear Testing--Engineering--Sailing
http://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
Old 11-01-2019, 18:58   #12
Registered User

Join Date: Mar 2015
Location: San Francisco Bay area
Boat: Condor Trimaran 30 foot
Posts: 1,159
Re: Racing sailor killed due to splice failure

Guys, sorry about the link. I posted and headed to work. Article certainly caught my attention.
alansmith is offline   Reply With Quote
Old 11-01-2019, 19:58   #13
Registered User

Join Date: Mar 2009
Location: Southern Chesapeake Bay
Boat: Norseman 430, Jabberwock
Posts: 865
Re: Racing sailor killed due to splice failure

I'm having trouble understanding what the strop looked like before it failed.

What was in the middle where it failed?
ggray is offline   Reply With Quote
Old 11-01-2019, 20:22   #14
Registered User
 
funjohnson's Avatar

Join Date: Mar 2010
Location: Out cruising again (Currently Ireland)
Boat: 37' aluminum pilothouse "Elements"
Posts: 2,259
Re: Racing sailor killed due to splice failure

I see a tapper on both of the brummel splices with the rings on each end. Plus, there is stitching back-up too...

It looks to me like the line failed mid way nowhere near the splices. The article says that instead of using two individual strops, the rigger used one longer length of line with rings on each end. That would make the splices on the end and not in the middle.... or was it spliced in the middle to connect the two strops? If he did splice the two together with just a brummel, then that is ridiculous stupid.

Maybe it was around fitting with too tight of a bend radius?

Click image for larger version

Name:	p1csmp7lsspq713s41aog1h1n1mc56.jpg
Views:	436
Size:	183.9 KB
ID:	183677

Matt
__________________
Youtube MJ sailing - Vlog
MJSailing.com - Written Blog
Rebuilt Aluminum Boat Over 2 Years... Now Back Cruising!
funjohnson is offline   Reply With Quote
Old 11-01-2019, 20:39   #15
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jul 2005
Location: Bellingham
Boat: Outbound 44
Posts: 7,103
Re: Racing sailor killed due to splice failure

Given the two ended strop they were using and the fact that only one side was in use at a time, I don't see how it could have been spliced with a bury. Seems like two, separate strops would be needed and they would need to be long enough to account for buries on both ends.
__________________

__________________
Paul
Paul L is online now   Reply With Quote
Reply

Tags
racing, sail

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Hunter sinks at Catalina due to bow cleat failure autumnbreeze27 Monohull Sailboats 550 11-04-2016 21:17



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:56.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.