Propulsion system for assistance when paddling in surfing; comprising a propellant device (1), hydro jet type, intended to be mounted on a surfboard (T); and a control device (2) in the manner of a bracelet or bracelet suitable for its attachment on a users arm. The control device (2) comprises: a microprocessor (21), a supply battery (22), sensors (23) that provide the microprocessor (21) with suitable data to identify the users rowing action, calculating the speed and intensity of paddling and generating a control signal proportional to the paddling intensity of the user and; a wireless communication means (24) that transmits the control signal to the propelling device (1); and wherein said propelling device (1) varies the propulsion power as a function of the signals received from the control device (2).

Propulsion system for assistance when paddling in surfing; comprising a propellant device (1), hydro jet type, intended to be mounted on a surfboard (T); and a control device (2) in the manner of a bracelet or bracelet suitable for its attachment on a users arm. The control device (2) comprises: a microprocessor (21), a supply battery (22), sensors (23) that provide the microprocessor (21) with suitable data to identify the users rowing action, calculating the speed and intensity of paddling and generating a control signal proportional to the paddling intensity of the user and; a wireless communication means (24) that transmits the control signal to the propelling device (1); and wherein said propelling device (1) varies the propulsion power as a function of the signals received from the control device (2).

The ongoing electrification revolution, originating in the automotive industry, has now expanded into the marine sector. This transition from internal combustion engines to electric motors necessitates careful adjustments due to the unique characteristics of electric motors, notably their high starting force. In the context of watercraft, where structural modifications are undesirable, this disclosure introduces a drive system fixation unit. This unit effectively redirects the sterndrive force from the stern wall to the sturdy structural base of the watercraft, ensuring a seamless integration of electric propulsion without compromising the vessel's integrity.

The ongoing electrification revolution, originating in the automotive industry, has now expanded into the marine sector. This transition from internal combustion engines to electric motors necessitates careful adjustments due to the unique characteristics of electric motors, notably their high starting force. In the context of watercraft, where structural modifications are undesirable, this disclosure introduces a drive system fixation unit. This unit effectively redirects the sterndrive force from the stern wall to the sturdy structural base of the watercraft, ensuring a seamless integration of electric propulsion without compromising the vessel's integrity.

A propeller hub assembly for a marine drive having a propeller shaft is provided. The propeller hub assembly includes a first hub portion having a first main body and multiple propeller blades extending radially therefrom, a second hub portion, wherein the second hub portion is coupled to the first hub portion, and a damper hub portion, wherein the damper hub portion is coupled to the second hub portion. The propeller hub assembly further includes multiple pendulum masses located within the damper hub portion. The first hub portion, the second hub portion, and the damper hub portion are configured to engage the propeller shaft such that rotation of the propeller shaft causes rotation of the first hub portion, the second hub portion, and the damper hub portion. Oscillations of the pendulum masses relative to the damper hub portion are configured to dampen torsional vibrations of the propeller hub assembly.

A propeller hub assembly for a marine drive having a propeller shaft is provided. The propeller hub assembly includes a first hub portion having a first main body and multiple propeller blades extending radially therefrom, a second hub portion, wherein the second hub portion is coupled to the first hub portion, and a damper hub portion, wherein the damper hub portion is coupled to the second hub portion. The propeller hub assembly further includes multiple pendulum masses located within the damper hub portion. The first hub portion, the second hub portion, and the damper hub portion are configured to engage the propeller shaft such that rotation of the propeller shaft causes rotation of the first hub portion, the second hub portion, and the damper hub portion. Oscillations of the pendulum masses relative to the damper hub portion are configured to dampen torsional vibrations of the propeller hub assembly.

A compressor module (1) comprises: a floor member (3); a gas cooler (24) mounted on the floor member (3); a compressor skid (10) disposed on a side of the gas cooler (24) opposite to where the floor member (3) is located, the compressor skid (10) being connected to the gas cooler (24); and a leg portion (15) connected to the compressor skid (10) and fixed to the floor member (3) that supports the compressor skid (10), the leg portion (15) providing a gap to dispose the gas cooler (24) between the floor member (3) and the compressor skid (10).

A compressor module (1) comprises: a floor member (3); a gas cooler (24) mounted on the floor member (3); a compressor skid (10) disposed on a side of the gas cooler (24) opposite to where the floor member (3) is located, the compressor skid (10) being connected to the gas cooler (24); and a leg portion (15) connected to the compressor skid (10) and fixed to the floor member (3) that supports the compressor skid (10), the leg portion (15) providing a gap to dispose the gas cooler (24) between the floor member (3) and the compressor skid (10).

A drive unit for propulsion and trim control of a marine vessel. The drive unit extends in use from the vessel along a vertical axis to a base plane normal to the vertical axis, and spanned by orthogonal longitudinal and lateral axes. The drive unit includes a first propulsion unit and a second propulsion unit arranged separated along the lateral axis and intersected by the base plane. The first propulsion unit and the second propulsion unit are jointly rotatable about the vertical axis, where the first propulsion unit and the second propulsion unit are individually rotatable about the lateral axis.

A drive unit for propulsion and trim control of a marine vessel. The drive unit extends in use from the vessel along a vertical axis to a base plane normal to the vertical axis, and spanned by orthogonal longitudinal and lateral axes. The drive unit includes a first propulsion unit and a second propulsion unit arranged separated along the lateral axis and intersected by the base plane. The first propulsion unit and the second propulsion unit are jointly rotatable about the vertical axis, where the first propulsion unit and the second propulsion unit are individually rotatable about the lateral axis.