Embodiments of the present invention relate to methods and apparatus for sorting undesired marine species during trawling, provides a pliable grid when the trawl net is pulled from the water and wound tightly on the net reel, and when the trawl is deployed in the water, the apparatus is fixed into place inside the trawl and holding its shape with consistent grid spacing. Marine species sorting apparatus in accordance with embodiments of the present invention includes grid, back straps, and lead ring. Grid includes a plurality of bars surrounded by grid frame. Grid frame is attached to lead ring at an angle using terminal couplers. Lead ring supports grid and secures marine species sorting apparatus in trawl webbing referred to as the extension.

Embodiments of the present invention relate to methods and apparatus for sorting undesired marine species during trawling, provides a pliable grid when the trawl net is pulled from the water and wound tightly on the net reel, and when the trawl is deployed in the water, the apparatus is fixed into place inside the trawl and holding its shape with consistent grid spacing. Marine species sorting apparatus in accordance with embodiments of the present invention includes grid, back straps, and lead ring. Grid includes a plurality of bars surrounded by grid frame. Grid frame is attached to lead ring at an angle using terminal couplers. Lead ring supports grid and secures marine species sorting apparatus in trawl webbing referred to as the extension.

Embodiments of the present invention relate to methods and apparatus for sorting undesired marine species during trawling, provides a pliable grid when the trawl net is pulled from the water and wound tightly on the net reel, and when the trawl is deployed in the water, the apparatus is fixed into place inside the trawl and holding its shape with consistent grid spacing. Marine species sorting apparatus in accordance with embodiments of the present invention includes grid, back straps, and lead ring. Grid includes a plurality of bars surrounded by grid frame. Grid frame is attached to lead ring at an angle using terminal couplers. Lead ring supports grid and secures marine species sorting apparatus in trawl webbing referred to as the extension.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive structure while ensuring that the conductor is slack when surrounded by the jacket layer (52).

For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive structure while ensuring that the conductor is slack when surrounded by the jacket layer (52).

For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.

A catch handling system includes a catch collection system. The catch collection system includes one catch handling depot; one or more trawls; and a catch transport system, where the catch transport system includes a transport system, and where the transport system includes a transport node. The transport node includes a releasable connection to a catch handling fleet carrier drone and to one or more units of a catch handling fleet.

A catch handling system includes a catch collection system. The catch collection system includes one catch handling depot; one or more trawls; and a catch transport system, where the catch transport system includes a transport system, and where the transport system includes a transport node. The transport node includes a releasable connection to a catch handling fleet carrier drone and to one or more units of a catch handling fleet.

A pumping system for moving a liquid, or a mixture of a liquid and one or more objects (P), from a collector device (2; 2) submerged in a body of water (W), to a receiving facility (31) comprises a first delivery line (7), a second delivery line (11) and a pump unit (9). The pump unit (9) is submerged in the body of water (W) at a first depth (d) below the water surface (S) and arranged between the collector (2; 2) and the receiving facility (31). The first delivery line (7) is fluidly connected between the collector device (2; 2) and a pump unit inlet (18). The second delivery line (11) is fluidly connected between a pump unit outlet (17) and the receiving facility (31). The pump unit is thus configured to generate suction in the first delivery line (7) and a positive pressure in the second delivery line (11). Suction in the first delivery line (7) may be increased by increasing the first depth (d) and/or by opening of the adjustable valve (30).

A rope for trawl nets having a high-strength eye-splice comprises an eye portion made of an HMPE material and tied round the end of the rope; a first fixing member preventing the eye portion from unraveling; an HMPE splice portion formed in a splice manner and having an outside and an inside that comprise HMPE, respectively; an HMPE sheathed strand portion in which a basic rope is interpolated inside, and strands of an HMPE material are woven in a blade manner on the outside of the basic rope; a second fixing member located at the end of the HMPE sheathed strand portion and capable of fixing the HMPE sheathed strand portion so that it does not come loose; and a basic rope portion comprising a general PE material.

A rope for trawl nets having a high-strength eye-splice comprises an eye portion made of an HMPE material and tied round the end of the rope; a first fixing member preventing the eye portion from unraveling; an HMPE splice portion formed in a splice manner and having an outside and an inside that comprise HMPE, respectively; an HMPE sheathed strand portion in which a basic rope is interpolated inside, and strands of an HMPE material are woven in a blade manner on the outside of the basic rope; a second fixing member located at the end of the HMPE sheathed strand portion and capable of fixing the HMPE sheathed strand portion so that it does not come loose; and a basic rope portion comprising a general PE material.