Engine compartment for personal watercraft

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having an output shaft, a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, at least one air duct with a first port arranged to communicate with ambient air from outside the hull and a second port opening into the hull, and a sub-resonator chamber communicating with the air duct at a point between the first and second ports, wherein the sub-resonator chamber is defined, at least in part, by a storage container.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having an output shaft, a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, at least one air duct with a first port arranged to communicate with ambient air from outside the hull and a second port opening into the hull, and a sub-resonator chamber communicating with the air duct at a point between the first and second ports, wherein at least one side of the sub-resonator chamber is removable from an upper side of the hull.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an engine compartment formed within the hull and defined between a fore bulkhead and an aft bulkhead, a fore compartment formed forward from the fore bulkhead, an aft compartment formed rearward from the aft bulkhead, each of the fore and aft compartments communicating with the engine compartment through at least one tube, an internal combustion engine located within the engine compartment and having an output shaft, and a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an engine compartment formed within the hull and defined between a fore bulkhead and an aft bulkhead, a fore air duct opening into the hull forward of the fore bulkhead and an aft air duct opening into the hull rearward of the aft bulkhead, an internal combustion engine located within the engine compartment and having an output shaft, and a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having an output shaft, and a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, the upper deck portion including a central elongated pedestal having an upper portion supporting a seat and defining an engine compartment for the engine having a lower wall, a pair of outer side walls, and a pair of inner side walls, each inner side wall spaced apart from a corresponding outer side wall so as to define a gap therebetween, the inner side wall, outer side wall, and the gap defining at least a part of the upper portion of the central elongated pedestal, at least a portion of the engine being located between the inner side walls, at least a portion of the lower wall being disposed below a waterline of the watercraft and not including inner and outer walls that are spaced apart, wherein the upper deck portion additionally includes an acoustic insulating material positioned between each corresponding pair of inner and outer side walls.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having an output shaft, and a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, the upper deck portion including a central elongated pedestal defining an engine compartment for the engine having a lower wall, a pair of outer side walls, and a pair of inner side walls, each inner side wall spaced apart from a corresponding outer side wall, at least a portion of the engine being located between the inner side walls, at least a portion of the lower wall being disposed below a waterline of the watercraft and not including inner and outer walls that are spaced apart, a seat with a base, the seat base being removably attached to the pedestal, and the seat base and the pedestal together defining at least one air pocket between the base and the pedestal.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having at least one exhaust port and an output shaft, a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, and an exhaust system communicating with the at least one exhaust port and extending to a discharge end, the lower hull portion including a hull insert overlying a portion of the hull with a layer of acoustic insulation material filling the space between the hull insert and the lower hull portion, at least a portion of the exhaust system positioned between the hull insert and the lower hull portion and surrounded by the acoustic insulation material.

A watercraft comprising a hull having a lower hull portion and an upper deck portion, an internal combustion engine located within the hull and having at least one exhaust port and an output shaft, a propulsion device carried by the hull and driven by the engine output shaft to propel the watercraft, and an exhaust system communicating with the at least one exhaust port and extending to a discharge end, the lower hull portion including a hull insert overlying a portion of the hull with a layer of insulation material filling the space between the hull insert and the lower hull portion, at least a portion of the exhaust system positioned between the hull insert and the lower hull portion and surrounded by the insulation material, wherein the hull insert includes a recessed cradle shaped to receive at least a portion of the exhaust system.