----------- proa - the outrigger sail boat - today - - fritz roth - - proadesign --
>>>>>> video > hinged vector fin proa
...... >>> easier to trailor .... beach ..... more draft when needed .... more comfort > flying !
..... > for more on the new hvfp at the end and > > > https://blog.proadesign.com
outrigger sail boat
over the last 2 decades
after I had a tri & a cat -
then a traditional proa
with a outrigger float on it
a 23` & a 31`have proven themselfs now
for over 4 winters sailing the strait of gibraltar & such in bft 10 -
sailing off a beach with breaking waves so high as the boat is wide -
then surfing back in & landing on the beach again -
anchoring with 1/4" nylon rode & a 5lbs anchor in a white squall -
beating out off marina bay towards the west -
when the whole bay of gibraltar was white -
I have been so convinced of it now - that I have started a 88`already -
have a boat as long as possible for comfort underway & anchoring -
because one can anchor almost anywhere there is no need to go into a marina -
meaning there is no need to have an engine -
having total control under sails alone
( you can turn on the spot - go both ways - standby & check things anytime )
having good cruising speeds with as little
as possible of an sailarea - 1000sf / 88` - no need to reef or
change sails up to 8 bft - beating - 10 running - to be safe
from any breaking freak wave or gust
modern proas can do a lot of things - the
polynesians could only dream about - the outriger sailboat of
today - is non capsizeable - fast to change direction - safe to
manoever even in thight spots - can any time go on stand by - to
look around and see what`s going on - turn on the spot - like
with a twin engine power boat - to land on most beaches - leave
again - without turnig the boat - they
- once underway - no leeway it all - and all this - with a boat
- that weighs only one half of a catamaran - has only 2 small
ruders - 360° - on the windward side of the mainhull - no
turning or moving mast - no dagger - center - steering boards -
nothing more to move or control - exept the sheets for the sails
for good performance - hard on the wind -
you need not only little resistence through the water - but
little aerodynamic resistence from the waterlinie on up as well
- that is why the crew is seated inside the boat - ( 1 ) the
bridgedeck is aero dynamically shaped - ( 8 ) and up to about
30` loa ( 13`wide ) because it is lighter then - one piece - can
be trailered high up -
sailing the proa - standing by - changing directions
you are sitting broadside to the wind in your boat - the sails are lose - you are drifting slowly to leeward - you pull on a sheet - the boat moves in that direction - it`s that easy- with the windward sail - ( 3 ) you even can turn on the spot - with the main * you go to the right - with the windward sail to the left - with the roller jibs ( 2 - these are just sails on a tube on the stay - control line ( 2 ) going from the top of the tube to the other - so if you pull one roller open - it closes the other automatically ) you can make the boat fall away from the wind - with the main sail you shot up to the wind - make the boat selfsteer -
* the main ( 5 ) ist on a mast with slides to leeward - ( 4 )
so without having a turning mast - you have a clear flow on the leeward side
steering is by 2 fin ruders - 45° on the side of the main hull - ( 7 ) so you can beached most anywhere - without damaging them - or having to pull them up - they are controled by your feet -
slings in the lines going to the bell crank on the balanced ruders - so they can turn which ever way they want to - left & right - actually - you do not need them - because the boat can be steered by itself - depending on the sail setting - exept in large waves & swells it makes for a nicer - straiter sailing - if you have the ruders - bow & stern -
the self leveling 2 stage fin - ( 6 )
sailforces + the windforces on the boat
combine to create a center of windforces somewhere 1/3 up the
mast - if now you have an angled fin to windward - you have a
means to counteracting these forces - you could put the fin to
leeward and lift the outrigger -
but you would have the same problems as a trimaran - diagonal
capsize in waves large enough - you would have very unstabil
boat - like it is very easy to hang up a pendulum - but try to
stand it up alone - further more - imagine a freak wave - hiting
the boat side ways - with the present setup - you have no wory
it all - ( just make sure the structure holds up ) but the other
setup is doomed - before the wave even hits - that is why - in
such conditions - you do not want to let the wind & waves -
be on the wrong side - ever -
now - if the outrigger wants to come out of the water - the fin`s lower part pulls it down - when the outrigger wants to go down into the water - the upper part of the fin lowers the vector more to the horizontal - making the outrigger want to come up - changes in bouancy of the fin helps in each case - if - as some have told me - the fin would come out of the water - through wave dynamics - as it never has with this configuration - then the center of lateral action moves violently forward - the boat shots up into the wind - I have tried this on a model without the lower part of the fin on it -
for more information check out ... www.proagenesis.org .... pictures & other languages
www.proatech.org .... for technology files & videos !
www.interproa.org - is for establishing a sailing basis .....
we have now finished the design of a 2 mast proa - it should even better selfsteer then the 1 mast version - and can be totally sailed without the roller jib - before the wind the forward mast sail can be sheeted in a backward beating position - because the jib is not needed in a storm it all - it can be much larger for light air performance - because they are on a stay 12° to leeward - they do not back wind the mast sail -
--------------------------------- 2 mast proa
and here is a 3 mast version !
it has the same mast sail area as the 2 mast rig -
but a lower center of effort -
it seams this would be the choice on the larger boats - it can have a cockpit on the bridgedeck - or a long cockpit in lee with 2 steering stations
and here we have the new hinged vector fin proa .............
and here a top view of the hinged vector fin on a flying proa .......
and here the front view from the hinged vector fin proa ......
to contact me - fritz_roth@
for more on the new hvfp > > > https://blog.proadesign.com
if you are
interested in a scientific discussion of the vector fin proa
you are invited to https://groups.yahoo.com/group/proatech
if you are interested in a club around these outrigger boats https://groups.yahoo.com/group/proagenesis
if you want to just build to present technology yourself https://groups.yahoo.com/group/proadesign
galactic central information
the core of this proa project ...
has its real essence here >
I had just finished my trimaran 1 year
and was only working at my old company> whenever I wanted to
So we could go on school holidays > child > for weeks at any time
Sail out to such an island and have a heavenly vacation !
I found this way of life ideal even back then >
because only with this .... an intelligent world is possible
So people worthy and sustainable > responsible > meaningful !
but .... for the woman this was not ... "right"
sooo ... I said at some point > if she did not like this >
then she should do what ever she wanted to .....
because at the time this xx seemed really strange to me > simply cracy !
just like this woman .... of my my birth .... who I was already at 3 convinved >>>
the age of stupid
today I know of course > that eva has a genetic brain damage
which consists > that they have too many of the same genes >
that is why being so perverted >
coming so full >>>> of feeling so good !
about being so cracy ....
that they are not capable of normal feelings !
no discussion ability ...
only if satan comes to here >
with his paradise destroy program
then her eyes light up ... or this other product >
So ... renovate the kitchen > this fodder > drink >
have the central heating certified !
the air conditioner maintained
the only inclination> skill and quality>
children and men enslaved ! ... of course very lovingly>
irresistible >>> to destroy the world >
making satan happy ..... being everything !
so the whole project for me has now been dealt with !
I have no idea what I am on this world doing at all .....
because with eva only destroying the world > so only as a psychopath
idiot or trained animal > man can want something from .... xx
and without eva ... everything does not make any sense in the long term!
without their development towards becoming homo sapiens >
and again to blame adam > competitive!
since he promotes this indulgence of her ....> love !!!
must love> otherwise he is done with ...
with his only quality > destroying every homo sapiens >
for his mom .... her delusion of all this great freedom !
this endless power doings ... on this world >
which must end as a result > will .....
So the common work > by Adam and Eva .... competing!
and if there is any hope >
coming from a stone age tribe ... some useful tribal society !
then of course comes this > west ... freed from all understanding
and free them > instead of learning from them ....