The sailing yacht CV30 was taking part in the third leg of the Clipper Round the World Yacht Race having left Cape Town on 31 October 2017 bound for Fremantle, Western Australia. At about 1414 local time on 18 November 2017, the yacht was in position 42°30.3’S, 087°36.3’E, approximately 1500nm from Fremantle, when a crew member, Simon Speirs, fell overboard. He was attached to the yacht by his safety harness tether. The hook at the end of the tether that was clipped to a jack-line, deformed and released resulting in him becoming separated from the yacht. Simon Speirs was recovered unconscious onto the yacht but sadly could not be resuscitated. Read initial findings [url=https://www.gov.uk/maib-reports/safety-warning-on-the-use-of-safety-harness-tethers-on-sailing-yachts]here[/url]: https://www.gov.uk/maib-reports/safety-warning-on-the-use-of-safety-harness-tethers-on-sailing-yachts

There have been updates and a full report on the accident. Scuttlebutt featured commentary by Darrell Nicholson after he did a significant investigation into the Marine Accident Investigation Branch report. 

Practical Sailor did an analysis of Safety Tethers earlier this year. It is worth reading.