The present invention provides a catamaran centralized-transportation fishing ship and a control method, which relate to the technical field of fishing of fishing ships. The catamaran centralized-transportation fishing ship has the fishing assembly and the concave chamber for centralized transportation of fish bodies, which can simultaneously have two functions of fishing and centralized transportation, and has a wide application range. Compared with existing fishing ships for fishing operations, the fishing ship can place the caught fish bodies in the concave chamber, so that the fish bodies can be in original water quality during a transfer process, and thus a survival rate of the fish bodies is increased. Meanwhile, setting of the limiting mechanism can prevent the fish bodies from escaping and increase a fishing amount of a single fishing operation.

A stable fishing raft that is easily transportable to the water without a trailer and has a deck large enough to easily and securely carry fishing gear. The deck and bottom are flat, and the sides are perpendicular to the deck and bottom. The deck is connected to the bottom at the bow and stern with a circular arc. The core of the raft is a buoyant foam, preferably polyurethane, and covered in a water-resistant resin, preferably polyethylene. The raft is steerable and propelled by paddle or trolling motor that attaches to a removable motor mount. In a preferred embodiment the raft has a recessed accessory track and a series of recessed rings on the deck to receive the bottom edge of a bucket and hold it in place as a seat. Rafts can be joined together with couplers.

A stable fishing raft that is easily transportable to the water without a trailer and has a deck large enough to easily and securely carry fishing gear. The deck and bottom are flat, and the sides are perpendicular to the deck and bottom. The deck is connected to the bottom at the bow and stern with a circular arc. The core of the raft is a buoyant foam, preferably polyurethane, and covered in a water-resistant resin, preferably polyethylene. The raft is steerable and propelled by paddle or trolling motor that attaches to a removable motor mount. In a preferred embodiment the raft has a recessed accessory track and a series of recessed rings on the deck to receive the bottom edge of a bucket and hold it in place as a seat. Rafts can be joined together with couplers.

An on-board chumming system and vessel using same include a generally vertically oriented downtube that connects a feed portion at the top with a comminution chamber at the bottom. A water inlet at the top of the downtube facilitates the bait falling into the comminution chamber to be pulverized and mixed with water to create the chum, which flows out of the comminution chamber through an outlet that passes through a side of the vessel.

An on-board chumming system and vessel using same include a generally vertically oriented downtube that connects a feed portion at the top with a comminution chamber at the bottom. A water inlet at the top of the downtube facilitates the bait falling into the comminution chamber to be pulverized and mixed with water to create the chum, which flows out of the comminution chamber through an outlet that passes through a side of the vessel.

An outboard motor for a marine vessel application, and related methods of making and operating same, are disclosed herein. In at least one embodiment, the outboard motor includes a horizontal-crankshaft engine in an upper portion of the outboard motor, positioned substantially positioned above a trimming axis of the outboard motor. In at least another embodiment, first, second and third transmission devices are employed to transmit rotational power from the engine to one or more propellers at a lower portion of the outboard motor. In at least a further embodiment, the outboard motor is made to include a rigid interior assembly formed by the engine, multiple transmission devices, and a further structural component. In further embodiments, the outboard motor includes numerous cooling, exhaust, and/or oil system components, as well as other transmission features.

An outboard motor for a marine vessel application, and related methods of making and operating same, are disclosed herein. In at least one embodiment, the outboard motor includes a horizontal-crankshaft engine in an upper portion of the outboard motor, positioned substantially positioned above a trimming axis of the outboard motor. In at least another embodiment, first, second and third transmission devices are employed to transmit rotational power from the engine to one or more propellers at a lower portion of the outboard motor. In at least a further embodiment, the outboard motor is made to include a rigid interior assembly formed by the engine, multiple transmission devices, and a further structural component. In further embodiments, the outboard motor includes numerous cooling, exhaust, and/or oil system components, as well as other transmission features.

A marine vessel propulsion system includes a propulsive force generator to generate a propulsive force, a drive source to drive the propulsive force generator, and a controller configured or programmed to control the drive source to perform marine vessel maneuvering-related functions including at least one limited function. The controller includes an interface, and is further configured or programmed to include a restriction unit to restrict a control operation for the limited function, and a restriction cancellation unit to cancel the restriction effected by the restriction unit to permit the control operation for the limited function if a predetermined keycode is inputted from the interface or is registered in the controller.

An enzymatic processing plant for continuous flow-based enzymatic processing of organic molecules, comprises an enzymatic processing area, wherein the enzymatic processing area comprises a turbulence-generating pipe with a repeatedly changing centre-line and/or a repeatedly changing cross-section, for generating turbulence to mix a reaction mixture and prevent sedimentation of particles as the reaction mixture is flowing through the turbulence-generating pipe, and wherein the enzymatic processing plant and the enzymatic processing area are arranged such that the reaction mixture is subjected to turbulence within the enzymatic processing area for a reaction time of 15 minutes or more.

An enzymatic processing plant for continuous flow-based enzymatic processing of organic molecules, comprises an enzymatic processing area, wherein the enzymatic processing area comprises a turbulence-generating pipe with a repeatedly changing centre-line and/or a repeatedly changing cross-section, for generating turbulence to mix a reaction mixture and prevent sedimentation of particles as the reaction mixture is flowing through the turbulence-generating pipe, and wherein the enzymatic processing plant and the enzymatic processing area are arranged such that the reaction mixture is subjected to turbulence within the enzymatic processing area for a reaction time of 15 minutes or more.