A jet pump includes a propulsion system including an impeller coupled to a rotatable shaft configured to receive torque from an engine and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the exhaust system is integrated with the propulsion system. In another embodiment, a jet pump includes a propulsion system including a water intake configured to take in water from a body of water, the water intake including an intake grate and an intake base, and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the intake base of the water intake is configured to be coupled to an exterior surface of a hull of the watercraft.

A personal watercraft includes: a watercraft body including a cargo-carrying surface; and at least one anchor rail mounted on the watercraft body, the anchor rail being adjacent to the cargo-carrying surface and exposed to an environment outside the watercraft body.

A personal watercraft includes: a watercraft body including a cargo-carrying surface; and at least one anchor rail mounted on the watercraft body, the anchor rail being adjacent to the cargo-carrying surface and exposed to an environment outside the watercraft body.

A combined paddle and pump can be used to propel a small boat. The handle telescopes with a locking nut that may be loosened to allow extension and retraction of the handle. The handle is hollow throughout and a pair of check valves are provided. One check valve opens when the handle is extended and the other opens when the handle is retracted. When one check valve is open, the other is closed. When the distal end of the paddle is placed within a volume of water, extension and retraction of the handle results in a liquid first being sucked into the hollow interior of the handle and then propelled out of the handle.

A system for manoeuvring a boat with fenders is described. A plurality of water nozzles is provided on the boat. Further, a plurality of pumps is operated by an artificial intelligence module and/or control unit and powered by the power source 130 of the boat. The plurality of pumps is primed continuously to reduce response time to control the plurality of pumps and each of the plurality of pumps is connected to one water nozzle. A plurality of sensors is configured to monitor the state of motion of the boat. Further, an artificial intelligence module is in communication with the plurality of water nozzles, the plurality of pumps, and the plurality of sensors. The artificial intelligence module is configured to keep the boat in a stationary standstill or on a chosen course of motion.

A system for manoeuvring a boat with fenders is described. A plurality of water nozzles is provided on the boat. Further, a plurality of pumps is operated by an artificial intelligence module and/or control unit and powered by the power source 130 of the boat. The plurality of pumps is primed continuously to reduce response time to control the plurality of pumps and each of the plurality of pumps is connected to one water nozzle. A plurality of sensors is configured to monitor the state of motion of the boat. Further, an artificial intelligence module is in communication with the plurality of water nozzles, the plurality of pumps, and the plurality of sensors. The artificial intelligence module is configured to keep the boat in a stationary standstill or on a chosen course of motion.

A jet propelled boat includes a boat body, a hatch, a pair of front end movement restrictors spaced apart from each other in a right-left direction in a vicinity of a front end of the hatch so as to restrict movement of the front end with respect to the deck, a rear end lock provided in a vicinity of a rear end of the hatch so as to restrict upward movement of the rear end, and a pair of rear end movement restrictors provided on both sides of the rear end lock in the right-left direction so as to restrict horizontal movement of the rear end.

A jet pump includes a propulsion system including an impeller coupled to a rotatable shaft configured to receive torque from an engine and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the exhaust system is separate from the propulsion system. The propulsion system includes a water intake configured to take in water from a body of water, the water intake including an intake grate and a base, and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the base of the water intake is configured to be coupled to an exterior surface of a hull of the watercraft.

A jet pump includes a propulsion system including an impeller coupled to a rotatable shaft configured to receive torque from an engine and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the exhaust system is separate from the propulsion system. The propulsion system includes a water intake configured to take in water from a body of water, the water intake including an intake grate and a base, and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the base of the water intake is configured to be coupled to an exterior surface of a hull of the watercraft.

The present invention discloses a mobile operating platform for a paddy field, including a body, a power generating device, a movement control system, a draft control system and an automatic leveling system, where the power generating device, the movement control system, the draft control system and the automatic leveling system are all mounted on the body. The present invention has a compact overall structure, and utilizes the pressure of a water flow to realize the movement of the platform, and can fully utilize the characteristics of the water flow to reduce power consumption, and avoid the use of a heavy and complicated traditional walking device, the entire mobile operating platform for a paddy field does not contact the ground, saving mechanical power and avoiding damage to an aquatic crop; the draft control system adjusts a draft by the amount of water filled in a closed cavity in the body.