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Single drive catamaran hull

A double-hull and hull technology, applied in the direction of hull, ship construction, hydrodynamic characteristics/hydrostatic characteristics, etc., can solve problems such as energy consumption

Active Publication Date: 2014-12-10
ASPEN POWER CATAMARANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Energy loss may also be significant due to wake generation

Method used

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  • Single drive catamaran hull
  • Single drive catamaran hull
  • Single drive catamaran hull

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Embodiment Construction

[0009] A complete catamaran disclosed herein, also simply referred to as a catamaran, is shown generally at 10 , having two separate hulls 12 and 14 , and a junction 16 in between. Depending on the specific application and specific design, the catamarans can be of different lengths and accommodate different numbers of people; for example, an a39-ft catamaran can easily accommodate four adults.

[0010] In this catamaran construction, only one of the hulls 12 and 14 has a drive train 18 which generally includes an electric motor, an output shaft and a propeller mounted on the output shaft. In the illustrated embodiment a single drive mechanism 18 is mounted within the starboard hull, but the single drive mechanism could alternatively be located within the port hull.

[0011] By using only one motor in one hull, that hull can be sized to accommodate the remainder of the motor and drive mechanism for easy access and servicing, while the propellerless hull can be narrow to reduce ...

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Abstract

The catamaran hull includes a pair of substantially parallel separate hulls, connected by an intermediate hull portion, wherein only one of the separate hulls includes a propulsion assembly. Each hull is asymmetric, but differently configured, such that the off-center thrust created by the propulsion assembly in the one hull is substantially offset by the turning force created by the difference in the two asymmetric hull shapes.

Description

technical field [0001] The present invention relates generally to catamaran hull structures, and more particularly to such hulls having two different asymmetric hull shapes. Background technique [0002] A catamaran typically has two identical, often asymmetrical hulls, which are identical to each other. Thus, any turning force induced by one hull is counteracted by the turning force from the other hull. Catamaran hulls are generally rather narrow and thus have space and efficiency disadvantages. A wide catamaran has more interior space, but creates larger wakes, which result in greater drag. In addition, double hulls usually require propeller pockets to reduce the propeller shaft angle. Conventional propeller containers cause the water to be forced to change direction in a relatively short space within the container, which in turn increases drag on board; a narrow hull generally changes the flow of water less than a wide hull and thus creates less drag. Energy losses ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B1/12
CPCB63B1/121
Inventor 劳伦斯.J.格拉夫戴维.J.皮尤
Owner ASPEN POWER CATAMARANS