Maiden Hong Kong continued


 
In part two of this article we look at the radical hull and rig design of Frank Pong's new super-maxi
This article follows part 1 published yesterday The hull of Maiden Hong Kong is narrow with a waterline maximum beam of 3.8m. However the hull has wings at deck level similar to KZ1 or the Italian Open 60 Shining, extending the overall beam to 8m. In the wings there is tankage each side for 5 tonnes of movable water ballast. Unlike Mari Cha IV which has water ballast and canting keel systems that are used at different times, the former for example to add weight to the boat when powering upwind in breeze, on Maiden Hong Kong the water ballast is used in the first instance simply to provide additional movable ballast to the canting keel. In terms of their use designer Juan Kouyoumdjian sees the keel first being canted in 6 knots of breeze and fully canted in 8 knots. Above 12-14 knots of wind speed the water ballast is brought on board. He does not envisage a time water ballast is used without the keel being canted fully. Cleverly the tanks are fitted with pressure valves so that in the event of a massive deceleration the water can escape between the tanks and ultimately out of the forward compartment. "That’s important so that the boat will not rip itself apart. If you don’t have those things you end up overstructuring the boat 99% of the time," warns the designer. The second role of the water ballast is to alter the fore and aft trim of the boat. This is not just to help raise the transom out in light weather or raise the bow when sailing into large waves. With the keel canted side force is created by the forward foil and the rudder, but Kouyoumdjian says that there may be occasion when more is needed and in this case the

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