Talk:Tunnel hull

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The article doesn't really describe a tunnel hull as such, but rather rambles about ground effect and what a tunnel hull isn't. It would be helpful if someone with boat design experience could elaborate the symmetrical/asymetrical features of the sponsons/hulls. From what I know, tunnel hulls are not symetrical, whereas catamarans are. That is what produces the tunnel shape; the inside of each hull is not symmetrical to the outside. Catamarans are, and hence don't have a clean tunnel shape underneath. —Preceding unsigned comment added by 122.106.5.150 (talk) 07:28, 2 March 2010 (UTC)