Hi and welcome to Cruising Forum. Re yoiur comment about being interested in getting a Cat. Thgere are many Cat owners in Australia
and most of them will tell you they are wonderful for living on but.... before you go down that track consider some of the negatives of certain catamarans.
They are often not very quiet to sail as on a seaway the waves will slap incessantly on the underside of the bridgedeck. They do rock and roll, maybe not quite like a keel
boat but cups still fall over and crew still get seasick on them. In fact the o nlky boat i have ever been sick on was a catamaran
due to the strange sort of start stop motion as the buoyant hulls stop the rolling. Talking of which they are very weight sensitive as the hulls need buoyancy fore and aft so trimming is essential and weight carrying limnited. Many of them cavitate when the motors lift
out of the water
. I tried to motor
into a 50 knot
storm and the props were out of the water
every second wave. I have been on a Wharram
cat that had to be towed off a lee shore due to the cavitation of the motors not getting enough grip to escape the situation. The sa me boat also ended up high and dry on a sandbank as the owner thought it being a shallow daraft boat he could cross a shallow sandbank. A task which you would never try to attempt in a keel
boat. They are poor sailors to windward meaning that when you could do that in a keel boat in a cat you will be motoring. So check around and read others stories before being talked into a floating home!
Oh yeah talking about a floating home they are really best suited to the tropics as the hulls are very pokey so you end up living up on the bridgedeck or outside. In the tropics in sandy shallow areas they are ideal boats.
Hope this helps.