because of the principal of low hydro / aerodynamic resistance -
these boats are designed with extremly low freeboard - light displacement - low sailarea - no cabin !!!!!!
that means - you have only the room available this functional sailboat structure provides -
meaning - a 30' - 500lbs proa will have
two emergency bunks - a 40' - 1 ton boat - sitting headroom -
from about 60' on - you can have standing room - 4 douple bunks - galley - navigation - seating etc
with 80' - 8tons ! - you get to the point where you can live aboard with 2 families -
100' and it has 6 douple bunks & everything you expect from a 50' mono or cat .....
then why have a 100' sailboat ? - twice
the length ?
well - I don't know - except that it sails like you where in heaven -
does not make your wife sea sick - already at anchor with a power boat going by
& you have a place to walk around on !
and because of all this - you don't have
to go into the marina !
well - maybe with your tender ........ having a 12' slip there ......
and if you ever want more protected
space when anchoring
just pitch your tent on top of the bridge deck !