There was a Google video a few years back of a swath hull ferry in what looked to be 5 to 10 foot seas. The horizontal portion of the boat was maybe 60 or 70 feet above the water when at res,t which was never seen in this video. Momentum was yanking the lower hot dog part of the hulls almost completely out of the water and then the hulls would plunge underwater 70 or more feet until the horizontal portion of the hull would stop this motion abruptly. The boat looked like a 150 foot long catamaran imitating a pogo stick. There was no way to stop it. Nasty. The key words for a potential swath owner are no reserve buoyancy. Once the hot dog part of the hull goes under water, down she goes, until the upper part of the boat reaches the water. --- On Tue, 6/21/11, danbollinger <no_reply@yahoogroups.com> wrote:
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