The buoy and rope launching device comprises a launch structure, a vessel, and a buoy. The launch structure is configured for use with the vessel. The launch structure is configured for use with a buoy. The buoy further comprises a pennant. The pennant is a rope that attaches the buoy to the pot. The launch structure jettisons the buoy and the pennant from the vessel. The use of the launch structure prevents the entanglement of a crewperson in the pennant as the buoy and pennant are jettisoned.

A fishing trap handling system for handling fishing traps on a deck of a fishing vessel is provided. The fishing trap handling system comprises a gantry crane type lifting apparatus for being mounted to the fishing vessel. The lifting apparatus is adapted for operation while the fishing vessel is exposed to rough seas. An end effector is mounted to a hoist of the lifting apparatus. The end effector is adapted for easily engaging one of the fishing traps and for holding the fishing trap in a substantially horizontal orientation.

A multi-functional aquatic vehicle comprises a main body. The main body comprises: a propulsion system, comprising at least one propeller for changing a motion attitude of the main body; a camera system, comprising at least one camera; a communication system, comprising a signal receiving module for receiving an external signal detected by the aquatic vehicle and a signal transmitting module for transmitting a signal to an external control system; and a control system, for controlling an operating state of the propulsion system, adjusting a capturing angle of the camera system and controlling internal and external communication of the communication system. A towing hook device comprises: a driving system, a connecting mechanism and a towing hook mechanism. The driving system drives the connecting mechanism to rotate such that the towing hook mechanism turns over or rotates to release a load.

The present invention discloses a kelp harvester. The kelp harvester includes a ship body and a U-shaped tripping piece, where two working chain racks are symmetrically arranged on both sides of the ship body; each working chain rack is provided with a chain and a chain driving device used to drive the chain to operate; multiple rope clamping devices are fixedly arranged on each chain; the rope clamping devices can clamp main ropes, so that when the chains operate, the rope clamping devices can drive the ship body to move along with the operation of the chains; the U-shaped tripping piece is rotatablely connected to the ship body through a hinge; and the ship body is further fixedly provided with a limiting baffle, and the limiting baffle limits the U-shaped tripping piece to stopping rotation when the U-shaped tripping piece is in a vertical state.

The present invention discloses a kelp harvester. The kelp harvester includes a ship body and a U-shaped tripping piece, where two working chain racks are symmetrically arranged on both sides of the ship body; each working chain rack is provided with a chain and a chain driving device used to drive the chain to operate; multiple rope clamping devices are fixedly arranged on each chain; the rope clamping devices can clamp main ropes, so that when the chains operate, the rope clamping devices can drive the ship body to move along with the operation of the chains; the U-shaped tripping piece is rotatablely connected to the ship body through a hinge; and the ship body is further fixedly provided with a limiting baffle, and the limiting baffle limits the U-shaped tripping piece to stopping rotation when the U-shaped tripping piece is in a vertical state.

A crayfish or crawfish harvesting apparatus employs an improved drive that uses hydraulic wheels (e.g., rubber tired wheels) encircled by one or more endless belts. One or more hydraulic motor drives can be used to drive the wheels. Lugs or guide lugs are placed on opposing sides of each wheel and are preferably connected to the belt. Fasteners (e.g., bolts or rivets) attach cleats (e.g., steel u-shaped channel cleats) to the belts and lugs.

A crayfish or crawfish harvesting apparatus employs an improved drive that uses hydraulic wheels (e.g., rubber tired wheels) encircled by one or more endless belts. One or more hydraulic motor drives can be used to drive the wheels. Lugs or guide lugs are placed on opposing sides of each wheel and are preferably connected to the belt. Fasteners (e.g., bolts or rivets) attach cleats (e.g., steel u-shaped channel cleats) to the belts and lugs.

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.

The present application describes an improved apparatus to hold and secure fly fishing equipment while not being directly handled by the operator.