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Catamaran tunnel hull. The catamaran is often mistakenly identified as a tunnel hull. Super fast ocean racing twin hulled boats are called catamarans not tunnel hulls. A Relative motion between waves and vessel.

Angling the stingerstrut on a Monohull Catamaran Tunnel Hull so that the prop is now higher than previouslypointing towards the sky will result in the ride attitude becoming loose. With ALL the features of TBDP. High performance racing catamarans and monohulls.

TFL 41 Fighter Cat 1010mm White gel coat. A high speed high efficiency stable catamaran boat hull which comprises a boat hull structure having an under surface a curved bow and a generally flat stern a pair of spaced-apart sponsons on. Founded in 1969 this British company has continually pioneered the design and construction of high performance for competition leisure commercial and military purposes.

Sharp turns are no problem in these surface effect boats. F1 style race boats are a true tunnel hull air entrapment as well but that design has many drawbacks for pleasure use. This creates a gap the entire length of the boat where the tunnel is just at the very back.

As a result the total wet planing surface area is next to nothing creating a smooth stable and fuel efficient ride. This type of power catamaran is very much like a mono-hull with a tunnel between the two halves of the hull. It was called a tunnel hull by most of the owners.

The Tunnel CAT type shown here has often been outfitted with hydrofoils in between the hulls. Technical design and performance articles on many subjects for TUNNEL boats VEE hulls and vee-pad hulls. In order to predict a catamaran performance it is essential to calculate the ship motions.