He was referring to sudden wind shifts from opposite direction saill one minute at 20mph in a steady 18mph the all of a sudden wind shift from reverse angle 40mph. To me seems far fetched to just happen out of no where with out sure tell tail signs I guess another ex. sailing to close to a leeshore possible big rotor (low pressure) on leeside of an island blowing back onto its self. The signs will be there before it happens. Feather sails wind jib and lower main start engine or through a sea anchor what it out. Big deal!
I realized that, after. I was thinking solely about proas in general though. I wonder what kinds of motion the proa would go through in real open water 100 miles off shore. My experience in actual open ocean see miles almost 0, One time with my uncle who was in the Navy on torpedo recovery ship 100 + miles off shore. Years sailing in winds from 14 to 25 mph close to shore (under50 miles) sailing at speed 20+ miles an hour.... over 15 years. Beach cats, windsurfing, kitesurfing in progression. I know its different way out there.
Sailing conservatively off shore is always an option. He also gave examples of things that would be needed abilities to depower quickly etc... On a proa simply uncleat have a tension cleat or sensory tention cleat to monitor the main sheet the sail spills to windward or leeward better efficiency than on most mono and cats no shrouds in the way to completely dump power. Why would he think I woundn't include such things?
A balanced boat will always be a balanced boat regardless.
Todd
--- In harryproa@yahoogroups.com.au, "John" <jrwells2007@...> wrote:
>
> Todd,
> Your comment could have been taken as an attack on Arto's seamanship. Arto is too modest to have made the obvious comment that he has plenty of experience offshore in a large cruising proa. Arto was trying to explain that an offshore boat of any type needs to be sufficiently strong to withstand unexpected and unusual stresses in a way that a coastal boat does not. A coastal boat has assistance nearby and can avoid bad weather by going for cover when the offshore boat cannot. At least, that is my understanding of his point.
>
>
> --- In harryproa@yahoogroups.com.au, "tsstproa" <bitme1234@> wrote:
> >
> > Sure there are many things to consider. Whats your point!
> >
> > Todd
> >
> > --- In harryproa@yahoogroups.com.au, Arto Hakkarainen <ahakkara@> wrote:
> > >
> > > I am the first to admit that there is a learning curve to all vessels that are not the kind that you have sailed before. More speed, bigger size, different rigs, different characteristics all require learning. But that was not my point. My point was that if you sail more than just play around close to home port in nice weather you will get into surprising situations that may force you in to unpredictable situations. When you are in such unpredictable situation you need a way out that will save you, your boat and the crew. On a dinghy all you need is righting capability. On bigger boats you need to be able to depower the rig fast enough.
> > >
> > > Arto
> > >
> > > --- On Mon, 11/22/10, tsstproa <bitme1234@> wrote:
> > >
> > >
> > > From: tsstproa <bitme1234@>
> > > Subject: [harryproa] Re: Rig - windward or leeward? Forces at play
> > > To: harryproa@yahoogroups.com.au
> > > Date: Monday, November 22, 2010, 6:27 PM
> > >
> > >
> > >
> > >
> > >
> > >
> > > If your unwilling to face the fact there is a learning curve on these types of craft . Maybe for your sake and the sake of your family stick to a boat you all ready no how to sail then. :)
> > >
> > > Todd
> > >
> > >
> > > --- In harryproa@yahoogroups.com.au, Arto Hakkarainen <ahakkara@> wrote:
> > > >
> > > >
> > > > --- On Sat, 11/20/10, tsstproa <bitme1234@> wrote:
> > > >
> > > >
> > > > From: tsstproa <bitme1234@>
> > > > Subject: [harryproa] Re: Rig - windward or leeward? Forces at play
> > > > To: harryproa@yahoogroups.com.au
> > > > Date: Saturday, November 20, 2010, 8:00 PM
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Sailing at speed why would the pacific prao be forced aback . That goes against common phisics it would seem?
> > > >
> > > > Todd
> > > >
> > > >
> > > > *****
> > > >
> > > > Sudden wind shift? Crew error? Forced to turn suddenly due to other vessels to avoid collision? Sudden thunder storm? Small tornado (I know there is a correct word for that in english but can't find it now...)? All of the above I or family members have been to when sailing...
> > > >
> > > > Arto
> > > >
> > >
> >
>