frant said.. Chris 249 said.. spiggie said..
Yes it was a good read it still amazes me though.
1 -how yachts can loose can their life rafts ,aren't their painter lines conected or do they have a hydrostatic realise conected .
2 - what happened to plotting on a chart to know exactly where you are instead of making judgments from chart plotters , I am sure before the race they would have to produce a chart to meet safety inspection , perhaps they need to scrutinise a bit off chart work prior to raceing.
Yes bass strait get rough but so does every bit of ocean when the wind builds at some time ,it is the sea if you go out you have to respect it and prepare for the worst .
Like everything in life it comes down to preperation
Hindsight is a wonderful thing
There's an interesting piece in the ORCV report about the forces required to shift the raft - apparently it could have been moving at 77 kmh on the way out!!
It's also hard to see how a yacht could get a raft back aboard in those conditions. The report sensibly comes to the conclusion that mountings should be looked at, and that the emphasis on being able to launch rafts within 15 seconds could lead to them being too vulnerable.
If the painter of the raft had been affixed to a strongpoint as is required the raft would have inflated. The painter is designed to break or act as a safety fuse so that if the vessel it is attached to sinks prior to the raft being cut free the painter breaks rather than rip the raft apart. The force of the raft flying overboard and coming to an abrupt halt would inflate the raft and the resulting dragging of an inflated raft by a vessel would break the painter. With all due respect to the inception crew they are very fortunate men as the raft was hardly secured for a gentle sea let alone breaking seas.
In my reply I was assuming that it was thought that a line similar to a painter could have been secured around the raft pack. Otherwise, as you say, the boat is left with an inflated raft stuck alongside in heavy conditions, and as Fastnet '79 showed, that's not something that works for very long.
Agree with you about the lashings on the raft. Personally I prefer a valise in some ways.
Back in the '70s a Canadian researcher into hypothermia designed a tiny one-man raft that dramatically increased life expectancy. It didn't even self inflate but could be blown up by a swimmer. Given the improvements in inflation systems and other inflatable craft, and the continuing issues with liferafts, it could be tempting to take a one-man craft along! It would be problematic in some ways but may solve the issues of raft weight and structural problems.