A catamaran which has a centre tunnel, the opposite sides (105a, 105b) of which form asymmetrical pontoons, which are mirror images of each other, and which pontoons have buoyancy, which has been adapted so that when the catamaran moves in water, the centre tunnel functions as a combined water and air tunnel. When the catamaran is stationary in water, the ceiling (108) of the centre tunnel is in water. The ceiling of the centre tunnel further curves in a cylindrically convex manner downwards when going from the bow (116) to the direction of the stern (118) only after an essentially horizontal portion (401) of a distance (d), which essentially horizontal portion is located between the pontoons.

Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

An assembly adapted for mounting a water engagement device to a marine vessel may include a transom plate, an actuator plate and a clamping assembly. The transom plate may be adapted to be connected to the marine vessel. The actuator plate may include a flange that is disposed under a bottom side of the transom plate. The clamping assembly is configured to engage the transom plate and the actuator plate to connect the actuator plate to the transom plate.

An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and/or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake. A wake modifying system for modifying a wake produced by a watercraft traveling through water may include a rudder pivotally mounted to the watercraft for steering the watercraft, a fin pivotally mounted to the watercraft substantially along a centerline of the watercraft and forward the rudder, wherein the fin pivots about an upright axis to modify the wake produced by the watercraft traveling through the water, an actuator mounted within the watercraft and operably coupled to the fin for pivoting the fin relative to the centerline, and a controller mounted on the watercraft allowing an operator to control the actuator and selectively pivot the fin to a desired angle θd relative to the centerline.

An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and/or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake. A wake modifying system for modifying a wake produced by a watercraft traveling through water may include a rudder pivotally mounted to the watercraft for steering the watercraft, a fin pivotally mounted to the watercraft substantially along a centerline of the watercraft and forward the rudder, wherein the fin pivots about an upright axis to modify the wake produced by the watercraft traveling through the water, an actuator mounted within the watercraft and operably coupled to the fin for pivoting the fin relative to the centerline, and a controller mounted on the watercraft allowing an operator to control the actuator and selectively pivot the fin to a desired angle θd relative to the centerline.

According to an embodiment of the present disclosure, a vessel includes: a hull 100 provided with a propellant 140; a deck 200 spaced apart from the hull 100; and a support 300 between the hull 100 and the deck 200, the support 300 configured to support 300 the deck 200 with respect to the hull 100, wherein the hull 100 is disposed below a water surface during operation, and the deck 200 is supported by the support 300 to be disposed above the water surface during operation.

According to an embodiment of the present disclosure, a vessel includes: a hull 100 provided with a propellant 140; a deck 200 spaced apart from the hull 100; and a support 300 between the hull 100 and the deck 200, the support 300 configured to support 300 the deck 200 with respect to the hull 100, wherein the hull 100 is disposed below a water surface during operation, and the deck 200 is supported by the support 300 to be disposed above the water surface during operation.