White Rabbit and Trimaran Yachts

That is a seriously impressive photo, showing the size reletive to the car.

Nelson Piquets PILAR ROSSI

At this moment there's a rebuild going on at the Inace Yard in Brasil.

A remarkable, 45 mtr. trimaran owned by Nelson Piquet as you can see at the build-pictures at the yard;
http://www.inace.com.br/english/under_construction/under_construction.htm look at the under contruction pictures.

Since this thread is now about several Trimarans I would like to add another. One of the older that I know of?

When I was young there was a trimaran which was among the fastest boats of her size and right now she was suddenly outside my window again, so I could take a picture.

She was built in 1968 by a Lord to offer his guests a fast transport to his Castle outside Stockholm. She is 16 m x 4 m and was cruising at 35 knots when new!

Not the worst view to have..

Following up on this post... here is a picture of Abeking & Rasmussen's "Bravado", docked at the Marriott today. These are the aluminum plates I referred to. In Florida, we call these... Hurricane Shutters!

At the moment Austal cant get these boats out the door quick enough. They are getting more orders for high speed ferries than they can produce. Apparently during sea trials just off Perth one of the stabilisers on the trimaran broke off. You can imagine the loading on the stabilisers at sea!

Ben,

You're right. The foil certainly doesn't develope lift while the ferry is static. If you examine the cross section of the center hull, it is much like a wave-piercer toward the bow (very narrow), but the hull becomes progressively broader toward the mid and aft sections. These sections will develope lift at speed, but the bow section does not have the same amount of surface area to provide equal lift, therefore a canard-type foil is used to compensate for this.

Another shot of the Pilar Rossi. Gutsey experiment!

nice picture; piquet is in the netherlands at this moment with his son for a demonstration with old f1 cars in rotterdam b.t.w.

Pilar Rossi

It reads that Pilar Rossi is being extended.
Wouldn't that be a more critical exercise on a vessel of this type?


AMG
Just noticed another element in your photo of the Lord's 1968 built trimaran.
You do realise, I hope, that your neighbour's battlement contains a long gun aimed at you.

Whoa! Good eye Codger!

i failed to detect the gun; in which part of the picture would that be?

In the "window" of the castle across the canal. You're looking right down the barrel of a cannon.

TriCat

What if the outer hulls evolved to become larger as the center hull became smaller?......the TRICAT by FBM

This is an older tech ferry vessel that was becoming very popular over in Hong Kong in the late 90's when I was working in SE Asia

if you mean the middle window; when i change the gamma setting, i see something roundish indeed; if its a gun; radareyes!!!

If I ever I cruise uncharted waters... I want Codger onboard!

in that case; have a 30 feet mast and tie him on top (feed every 4 hours for best result)

Good observation Codger!

It is a cannon, fortunately pointing a couple of degrees south of my house!

The cannonballs are about twice the size of the brain of this PWC-pilot, breaching the 5-knot speed limits close to our Swan-family just a few minutes ago when I looked out...

The old fortress is today a Museum but some of the cannons, a little more modern, are used for shooting salutes at the birthdays of our Royal Family.

Then it would become a wave-piercer.

Joking aside... it's hard to say Brian. There might be a fine line between bridging the gap of a catamaran and mono-hull. Essentially, you end up with a cathedral hull. At that point, you can expect... when the going gets rough... so will your ride.

I'm sure ride quality would be sacrificed in cathedral hull yacht. The only way to avoid this would be narrow hull sections with deep tunnels, but then you would loose interior volume. So far, I think wave-piercers such as New Zealand yacht's "Spirit" pictured below, have managed to straddle this hurdle very well. Although I haven't cruised aboard one, I've heard (or read somewhere) that in certain wave conditions it doesn't handle as favorably as a cat or a monohull. But everything is a trade-off. Spirit offers monohull-like accomodations combined with catamaran stability. The fact that it's a wave-piercer increases its efficiency, i.e. higher cruise speeds, reduced fuel consumption, minimized wake and improved ride in many conditions.

We all know the individual advantanges of multi-hulls and mono-hulls, but they don't always cross platform well. This begs the questions... why hasn't someone developed deployable outriggers for monohulls?

Call it "SOD"... or "Stability On Demand".

Now that you mention it Carl, those do look like outriggers on the Pilar Rossi. Maybe not so "deployable" though.

Kelly