A seine net assembly utilizes buoyant seine net purse rings that float above the leadline and therefore reduce the risk of the purse rings getting snagged on the bottom of the body of water. An exemplary buoyant purse ring may have a specific gravity less than 1.0 and preferably, between 0.08 and 0.96. It is desirable that the purse rings float but not be so buoyant that they cause the leadline and therefore the leadline end of the net to float. An exemplary purse ring is made out of a polymeric material such as polyethylene and most preferably ultra-high molecular weight polyethylene (UHMWPE). A polymeric purse ring may have a ring wall with a rectangular shape designed for durability and tighter packing. The width of the ring wall may be greater than the thickness.

A seine net assembly utilizes buoyant seine net purse rings that float above the leadline and therefore reduce the risk of the purse rings getting snagged on the bottom of the body of water. An exemplary buoyant purse ring may have a specific gravity less than 1.0 and preferably, between 0.08 and 0.96. It is desirable that the purse rings float but not be so buoyant that they cause the leadline and therefore the leadline end of the net to float. An exemplary purse ring is made out of a polymeric material such as polyethylene and most preferably ultra-high molecular weight polyethylene (UHMWPE). A polymeric purse ring may have a ring wall with a rectangular shape designed for durability and tighter packing. The width of the ring wall may be greater than the thickness.

A buoyancy element is for constructing a modular buoyancy system for a circularly shaped net cage. The buoyancy element includes a cage side, an opposite straight long side, and coupling sides between the cage side and the straight long side. The cage side is curved, following the periphery of the net cage.

A buoyancy element is for constructing a modular buoyancy system for a circularly shaped net cage. The buoyancy element includes a cage side, an opposite straight long side, and coupling sides between the cage side and the straight long side. The cage side is curved, following the periphery of the net cage.

A segment for use in a trawl system having a cable and a longitudinal axis. The segment has a segment body and at least one passage extending from an inner side to an outer side of the body for receiving the cable of the trawl system. The segment body is hydrodynamically shaped such that the segment is urged away from the longitudinal axis when the segment is pulled through water by the cable. A trawl net system is also disclosed.

An example line restraint system comprises a housing, a processor, a motor, a release cam, and a timer. The release cam comprises a stem portion and an arm portion. The stem portion is proximate to the housing and the arm portion may be opposite the stem portion. The stem portion may be rotatably coupled to the motor. The motor may be configured to turn the arm portion of the release cam between an open and closed state. When in the closed state, an overhang of the arm portion at least partially defines a cavity capable of retaining a release line. When in the open state, the release cam opens the cavity to enable release of the release line. The timer may receive instructions from the processor to set a particular time and to trigger the motor to turn the release cam from the closed state to the open state.

An apparatus and technique for underwater storage and deployment of a fishing line and buoy includes a cylinder coupled to a fishing apparatus. A buoy is attached to a buoy line coupled to the fishing apparatus and the buoy line and buoy are stowed within the cylinder in a first position. A holding mechanism holds a top perimeter of the cylinder closed until intentionally released. Upon release of the holding mechanism, the buoy and buoy line escape the cylinder. The buoy then pulls the buoy line to the surface where the fishing apparatus can be recovered by the fisher.

An apparatus and technique for underwater storage and deployment of a fishing line and buoy includes a mesh cylinder coupled to a fishing apparatus. A buoy is attached to a buoy line coupled to the fishing apparatus and the buoy line and buoy are stowed within the mesh cylinder in a first position. A drawstring holds a top perimeter of the mesh cylinder closed until intentionally released. Upon release of the drawstring, the buoy and buoy line escape the mesh cylinder. The buoy then pulls the buoy line to the surface where the fishing apparatus can be recovered by the fisher.

An apparatus and technique for underwater storage and deployment of a fishing line and buoy includes a mesh cylinder coupled to a fishing apparatus. A buoy is attached to a buoy line coupled to the fishing apparatus and the buoy line and buoy are stowed within the mesh cylinder in a first position. A drawstring holds a top perimeter of the mesh cylinder closed until intentionally released. Upon release of the drawstring, the buoy and buoy line escape the mesh cylinder. The buoy then pulls the buoy line to the surface where the fishing apparatus can be recovered by the fisher.

An apparatus and technique for underwater storage and deployment of a fishing line and buoy includes a mesh cylinder coupled to a fishing apparatus. A buoy is attached to a buoy line coupled to the fishing apparatus and the buoy line and buoy are stowed within the mesh cylinder in a first position. A drawstring holds a top perimeter of the mesh cylinder closed until intentionally released. Upon release of the drawstring, the buoy and buoy line escape the mesh cylinder. The buoy then pulls the buoy line to the surface where the fishing apparatus can be recovered by the fisher.