Laser 161752 Tynemouth |
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Laser 28 - Excellent example of this great design Hamble le rice |
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Laser 140101 Tynemouth |
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List classes of boat for sale |
World Sailing Report on Bora Gulari Accident |
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Sam.Spoons ![]() Really should get out more ![]() Joined: 07 Mar 12 Location: Manchester UK Online Status: Offline Posts: 3401 |
![]() ![]() ![]() ![]() Posted: 27 Nov 17 at 11:00am |
From what I can gather it was the traveller line rather than the sheet that did the damage JJ.
Bigger blocks will reduce friction as will fewer blocks or thinner rope. I guess finding a compromise is the key. Spice has a 6:1 centre mainsheet but still has pretty high sheet loads, Blaze (and now Supernova) has a 2:1 transom mainsheet led along the boom via a ratchet on the kicker take off to the hand. Much lower sheet loads with only three blocks in the system, but I do seem to be pulling a fair bit of mainsheet between running and upwind. I suppose a couple of the extra purchases on the Spice go to overcoming the extra friction ![]() Perhaps I'll measure the amount of sheet pulled next time I rig each of the boats.....
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Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish" |
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Control lines I find adding extra diameter really adds resistance, so it end up being just as tough on your hands, and tougher on your muscles, and then doesn't release as well. You can obviously go up in sheave diameter, but it's not always possible on control lines.
With sheets you can always use larger blocks and with tapered sheets it should run smooth. I do find over 8mm the sheets gets quite heavy and harder to work with in the boat.
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JohnJack ![]() Far too distracted from work ![]() Joined: 12 Mar 13 Online Status: Offline Posts: 246 |
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From the report, it sounds like the amputation of his fingers was caused by the sheet first gripping then the sudden jerk as the sheet tightens against the helmsman momentum whilst exiting the boat during the pitch pole. Same mechanism as the long drop (though a hangman's skill was in only allowing the offender to drop enough to allow dislocation of the neck and not ripping the head off). I never understood the need for super skinny sheets, though I have really poor grip in my hands anyway and struggle with anything less than 8-10mm if it has any serious load on it. If I find it doesn't run free enough, I just substitute with bigger blocks. the extra few grams in weight is not going to make that much difference overall. However not sure if the Nacra is a total one design where this isn't a possibility (in which case it may need a review) or is this just put down to being a freak accident with an "allowable" minute possibility of reaccurence.
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Oatsandbeans ![]() Far too distracted from work ![]() Joined: 19 Sep 05 Location: United Kingdom Online Status: Offline Posts: 382 |
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It always made me cringe seeing sailors wrap ropes around my hands. I have never done it. I get a better grip on a rope by passing it over my thumb when it has come out the top of my hand and then it goes back into the hand. If you want to ease it you just ease your grip and it slowly runs over thumb. In an extreme situation like bora's letting the rope off your hand is still easy and quick.
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turnturtle ![]() Really should get out more ![]() Joined: 05 Dec 14 Online Status: Offline Posts: 2538 |
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I heard a rumour of a muppet who smashed himself up on a harbour wall kiting.... he gave it up and ‘retired’ to dinghy sailing as a result... via a Musto Skiff.
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johnr ![]() Newbie ![]() Joined: 04 Apr 08 Online Status: Offline Posts: 34 |
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Kit injury 1: guys loses control of his kite in car park is dragged along car park feet first with legs under parked car and face and body through car door. Poor guy reading the paper to get away from his wife on a Sunday morning probably had a toilet accident. Both kneecaps damaged and serious rehabilitation required.
Kite injury 2: Jumps and lands in massive tree stump washed up on beach breaking hip again with long term rehabilitation. Kite injury 3: Fatality due to head injury colliding with slip edge during launching. The guys was a very experienced windsurfer, outdoor instructor and the last guy I thought would die doing kitesurfing. Kiting does not seem that safe compared to windsurfing. Sure kit is better and people more skillful but the early adoptors did not seem to fare to well. Not sure any of those gloves would prevent a reoccurrence of Bora's injury as I believe that it was the wrapping of the control line that caused the issue. It could be argued that if he was not wearing gloves then he would have come of without losing figures as the rope would have been more inclined to release. They are wearing gloves so they can pull high loads and use skinny ropes. |
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423zero ![]() Really should get out more ![]() Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420 |
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I saw a kite mowdown two toddlers and their mother, they were paddling in two inches of water.
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sargesail ![]() Really should get out more ![]() ![]() Joined: 14 Jan 06 Location: United Kingdom Online Status: Offline Posts: 1459 |
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In the early days I saw someone transition off the sea, over the beach and through the windscreen of his own BMW in the carpark.
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Old Timer ![]() Far too distracted from work ![]() Joined: 05 Jun 13 Online Status: Offline Posts: 370 |
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Yeah, kiting is really safe, although I have heard tales of a few muppets smashing themselves up on land when they don’t have the skills to control the kite.
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andymck ![]() Far too distracted from work ![]() Joined: 15 Dec 06 Location: Stamford Online Status: Offline Posts: 397 |
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There is a major floor in the report which is the lack of a good medical report. There are three potential mechanisms for the injury as described, a cut by a sharp surface. A crush injury by the control line or a “ring” avulsion type injury, which is a combination of constriction and tension. Or a combination. Use of Gloves will not really protect against the latter two. In fact can in some circumstances can make it worse.
A better description of the state of tissues at time of presentation including the state of the gloves would provide clues to the mechanism involved. This would normally be part of a medical report. This would have also tried to identify the mechanism as it does have a bearing on prognosis. The big lesson appears to be the wrapping of sheets and lines. Oh and that we know as we get faster and foil we are going to have more significant and potentially life changing injuries due to the massive increase in kinetic energy. Andy |
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Andy Mck
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