Just to inject some reality (regarding AC astonishing developments) for you negative chaps to read and weep:
Shortly after starting, skipper Dean Barker and the Kiwi crew recorded a top speed of 44.15 knots – 50.8 mph/81.7 kph/74.5 feet per second – on the first reach leg. The windspeed on the leg peaked at 15.8 knots. The team’s previous record was 43.26 knots, set on July 9 in slightly stronger winds.
“By far this is the coolest, most fun boat I’ve ever sailed on, there’s no doubt about that,” said Emirates Team New Zealand wing trimmer Glenn Ashby, who watched today’s race from the chase boat.
The speed is impressive indeed.
But it shouldn't be surprising.
These boats have a WL that is 22.0 meters long and a displacement 5.7 to 5.9 M^3. That gives them a D/L of roughly only16!
The S/D's of these boats, just counting the wing sail is a whopping 79.
And they foil.
The one thing I understand about foiling is that your maximum speed is quite tied to your take off speed. The faster you are going before the foils lift the boat, the smaller in area the foils can be. The smaller the area, the lower the friction drag.
Also, the wing sails may not be the greatest when it comes to plain lift, but are incredibly efficient when it comes to lift to drag.
Everything about these boats means speed, speed and more speed.
The only two draw backs are:
1.) Both boats have capsized with significant damage and
2.) One capsize caused a fatality.
If either boat capsizes during the actual races and is significantly damaged, the other boat stands to win the series by default.
If that happens, the winner is likely to specify different boats for next AC series (he may accurately see that it was a matter of dumb luck that the opponents boat capsized and not his).
It appears to be one of the goals of this design type to be able to be disassembled and put in shipping containers (thanks to Doug showing me the link, I was able to down load the AC72 design rules).
I wonder if there are any tramp freighters left that could carry something, such as an old 12 or an IACC, as deck cargo.