boarderbas schreef :
Het is toegestaan. Tot er bij het WK in Kiel 2 crews overboord gingen door overhaast vervangen slecht aangebrachte dyneema railing.
Inspecteurs gebruiken de OSR om af te kunnen keuren als er misstanden zijn. Mijn keurig aangebrachte dyneema railing is meermalen goedgekeurd voor OSR4
Dyneema zeerailing is in de OSR inderdaad
toegestaan voor multihulls (Mu**) en monohulls categorie 4 (Mo4).
Changes made at the 2014 ISAF Annual Conference affect the 2014-15 edition of the regulations. Unless otherwise specified the amendments are effective 1 January 2015.
...
3.14. Pulpits, Stanchions, Lifelines
Dyneema lifelines are no longer permitted for monohulls in Categories 0,1,2 and 3.
De beperking van het toestaan van HMPE voor zeerailing tot deze categorieën is tot stand gekomen in
de vergadering van de ISAF "Oceanic and Offshore Committee" op 6 november 2014.
Mij opvallend citaat in de notulen:
As an observer, Rob Weiland (Class Manager TP52 class) noted that the TP52 Class Rules require the lower lifelines to be of stainless steel wire, as he said: “he did not want to see my guys in the piss”. Composite fibre like dyneema gives a genuine advantage in the rigging, but no advantage in the lifelines. He considers it a religious discussion.
Deze beperking is een uitvloeisel van het werk van de ISAF "Lifeline Material Working Party" (zie bijlage):
Previous research and test suggest that HMPE lifelines are capable of performing the necessary requirements that are met by wire lifelines in an ideal world, with correct assembly, associated materials, maintenance and usage. However, it is apparent that with the allowance of HMPE to be used for lifelines we have and will continue to see more failures than if HMPE is not permitted. The risk of crew members ending up in the water, both inshore and offshore is increased if HMPE lifelines are used rather than stainless steel wire, for reasons other than the materials ultimate strength, and for reasons that may be unrecognised by the crews until it is too late.