Attachment_4_-_1305M319RNFFP0018_Trawl_Specifications_.pdf

Eastern Bering Sea Shelf Bottom Trawl Survey Gear Description for 83-112 Eastern Trawl

Netting: Body and wing 4" stretched measure (including length of one knot) 60 T nylon, three-strand twist, preshrunk and dyed green.

Intermediate and codend - 3½" stretched measure 96 T nylon, three-strand, twist, preshrunk and dyed green.

Codend liner - 1¼" stretched measure 18 T nylon, three-strand twist, preshrunk and dyed green.

Headrope: 83' 9" of ½" (6×19) galvanized fiber core wire rope wrapped with d" polypropylene rope.

Both eyes have ½" gusseted thimbles.

The headrope doesn’t include the length of either eye.

Length is measured from the top of the nicro sleeve to the top of nicro at the other end.

Top wings are hung over 36'.

Footrope: 111' 9" plus thimbled eyes of e", (6×19) galvanized, fiber core wire rope, wrapped with ½" polypropylene rope.

Loops of 5/16" galvanized, proof coil chain, (approx. 170') are tied to wrapped footrope by passing two fathoms of double 21 T nylon twine through every tenth link starting at the top of the nicro forming the eye splice.

Chain links are secured to footrope every 8" throughout length of wing forming 76 chain hangings over 50' each wing.

Busom has 16 chain hangings equally spaced over 11' 9".

There are four bars (2 meshes) per hanging in wings and 4 meshes per hanging in busom, hung with 96 T nylon round braid hanging twine.

After the net is hung, split pieces of heavy rubber hose are served around footrope, passing the hose twice between each chain hanging for the length of the footrope.

Breastlines: ½" (6×19) galvanized wire rope wrapped with d" polypropylene rope.

Top and bottom breastlines are 8', measured from the top of the nicro press forming one eye through the bearing point of the other eye.

Riblines: ¾" Samson 2 and 1® Duralon braided trawl rope.

Riblines are hung at 97% of stretched measure of the gored seam.

All measurements are made with 400 lbs of tension on rope.

Gored seams are attached to riblines using white, untreated 60 T braided nylon hanging twine used to tie a benzel every 16".

NOAA Fisheries Trawl Survey Protocols

Flotation: Seventeen 8" aluminum side lug floats along each wing and seven 8" floats in center.

Total of 41 floats along headrope spaced 24¼" apart.

Buoyancy of 6.3 lbs each (258 lbs total).

Side seams: Side seams are laced in top and bottom individually gathering 3 meshes (4 knots) using white, double 21 T perma-grip® (or like kind) nylon three-strand twine.

Top and bottom panels are then laced together using green, double 21 T perma-grip® (or like kind) nylon three-strand twine.

Codend: 3½" stretched measure (including one knot) nylon, dyed green, 96 T nylon three-strand mesh.

Codend is a “double wall” construction.

Four panels of 96 T web cut 64 meshes long by 120 meshes deep.

Two meshes on each side are laced together, leaving 60 “open meshes” per panel.

Gored seams are laced together using 60 T round braid hanging twine and hung to riblines of ¾" Samson 2in1® Duralon braided trawl rope.

Riblines in codend are hung at 90% of stretched measurement of gored seams.

Riblines are measured under 400 lbs of tension.

Codend is closed at aft end using 24-2½" x 5/16" galvanized steel rings.

A ¼" Duralon braided rope is passed through 5 selvage meshes and a ring is attached to the rope using a cow hitch every 12" leaving five open meshes between each ring.

The bag is then closed using a e" - ¾" hauling clip.

A liner of 1¼" three strand twine nylon, 360 meshes long by 200 meshes deep is hung on the inside of the bag 78 meshes up from terminal end.

Alaska Fisheries Science Center

Materials List for 83-112 Eastern Trawl

Specifications of wire, chain, and rope include rated breaking strength (BS), specific gravity (SG), and density.

WEB: Mesh sizes listed are given in “stretched measure”, a standard method of measuring mesh size that includes the length of one knot.

Body and wings ~ 4" # 60T three strand nylon - dyed green.

Intermediate ~ 3½" # 96T three strand nylon, dyed green, single wall construction.

Codend ~ 3½" # 96T three strand nylon, dyed green, double wall construction.

Liner ~ 1¼" # 18T three strand nylon - dyed green.

Chaffing gear ~ 6", 6-mm polyethylene knotted web.

WIRE ROPE: ½" 6×19 galvanized fiber core (BS 9,700 kg, 0.62 kg/m), eyes are formed using galvanized reinforced thimbles.

CHAIN: 5/16" galvanized proof coil (BS 4,750 kg, 1.21 kg/m).

FLOATS: 8" side lug trawl floats, depth rated to a minimum 400 fm, 258 lbs of total buoyancy.

RIBLINES: ¾" Samson Duralon™ 2-in-1® stable braid, white, light bonding (BS 8,800 kg, SG 1.83, 0.27 kg/m).

TWINE: Sewing panels together: # 60T three strand nylon.

Lacing seams: double, white # 21T three strand nylon.

Joining seams together: double, green # 21T three strand nylon.

Hanging on framing lines: white, # 96T round braid hanging twine.

Fly mesh at end of bag- # 182T round braid hanging twine

ROPE: Float lines - 1/4" polypropylene (BS 570 kg, SG 0.95).

Pucker ring lines- Samson 1/4" Duralon™ 2-in-1®(BS 1,270 kg, SG 1.38).

Restrictor rope- 1 1/8" Poly Plus™ three strand (BS 10,740 kg, SG 0.91).

Splitting strap- 3/4" Spectra™ braided rope with eye each end (BS 21,773 kg, SG 0.98).

Splitting ring lines- ½" Samson Duralon™ 2-in-1® stable braid (BS 4,477 kg, SG 1.38).

Hole through trawl float line- ½" hollow braid Poly-Plus™ (BS 2,721 kg, SG 0.91).

FOOTROPE: e" 6×19 galvanized, fiber core wire rope with reinforced thimbled eyes.

½" three strand polypropylene rope served around wire rope.

5/16" galvanized proof coil chain.

Split heavy rubber hose served between chain hangings.

Footrope setback/extension, ½" long link alloy chain connected to footrope with a e" hammer lock. Total length including connecting hardware - 24".

Splitting rings - 5½" × ¾".

Pucker rings at end of codend- 2½" × ¼".

Framing Lines for 83-112 Eastern Trawl

Net Plan for 83-112 Eastern Trawl (“Cut Plan” = Total Mesh Counts)

Net Reel/Bridle Rigging Plan for 83-112 Eastern Trawl

Trawl Door Rigging Plan Detail for 83-112 Eastern Trawl Sole Manufacturer NET Systems, Inc., Bainbridge Island, WA

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Eastern Bering Sea Slope Survey Gear Description for Poly Nor’Eastern Trawl

Netting: Polyethylene, 5" stretch measure - 4 mm top and sides, 5 mm bottom and intermediate.

Headrope: 89' 1" of ½" (6×19) galvanized wire rope wrapped with d" polypropylene rope.

Both eyes have ½" gusseted thimble; 89' 1" doesn’t include the length of either eye.

Headrope length is measure from the top of the nicro sleeve to the top of the nicro at other end.

Top wing is hung over 16.31" per taper combination.

Headrope setback - 18" of ½" long link galvanized alloy chain and connecting hardware.

Bolsh line: 81' 7" plus thimbled eyes of d" (6×19) galvanized wire rope, wrapped with d" polypropylene rope.

Fishing Line: 81' of ½" long link galvanized alloy chain.

Safe working load of 11,300 lbs.

Breastlines: ½" (6×19) galvanized wire rope wrapped with d" polypropylene rope.

Top corner 19' 6", bottom corner 8' 8", bottom side panel 30' 6".

All lengths are measured from the top of nicro sleeve at wing tip and including thimbled eye at ribline.

Riblines: ¾" Samson 2in1® Duralon braided trawl rope.

Riblines are hung at 98% of stretch measure of gored seam.

All measurements are made with 400 lbs of tension on rope.

Gored seams are attached to the ribline using white untreated 60 T braided nylon hanging twine used to tie a benzel every 16".

Groundgear: 8" rubber discs strung on ½" galvanized, long link marine deck lashing chain, grade 70, 79' 6" bearing to bearing (eye to eye). “Flying wing” outboard sections, 4" rubber discs strung on ¾" (6×19) fiber core wire rope.

See groundgear diagram for more detailed description.

Side Seams: Side seams are laced in each panel individually.

Seams are made by gathering 3 meshes (4 knots) and lacing them together using white, double 21 thread perma-grip® (or like kind) nylon, three-strand twine.

Individual panels are laced together using green, double 21 thread perma-grip® nylon, three-strand twine.

Panels which are secured to framing lines have selvage edge created by gathering 3 meshes as described above.

These selvage edges are hung tight to framing lines using 60 T braided nylon hanging twine.

Flotation: Ninety 8" side lug deep-water trawl floats (5.4 lbs of buoyancy each) hung evenly to headrope starting 1' from wing tip, leaving 3' open in the center of the headrope.

Total buoyancy - 486 lbs.

Splitting Gear: ¾" Spectra® rope spliced 21' with eyes in each end.

The rope is passed through four galvanized rings secured to each ribline 18 meshes from the bottom. A second identical splitting strap is located 38 meshes from the bottom.

Codend: 3½" stretched measure (including 1 knot) polyethelene 4 mm double bar mesh.

Four panels cut 30 meshes long by 100 meshes deep.

Two meshes in a gored seam each side, leaving 26 open meshes per panel.

Gored seams are laced together using double 21 T nylon twine.

Riblines in codend are ¾" 2in1® Duralon braided trawl rope, hung at 90% of the stretch measure of the gored seams.

Codend is closed at terminal end using 25 2½" X ¼" galvanized steel rings.

A ¼" Duralon rope is passed through the selvage mesh and a ring is attached to the rope using a cow hitch every 12", with five open meshes between each ring.

The bag is then closed using a e"-¾" hauling clip.

Eastern Bering Sea Slope Survey Materials List for Poly Nor’Eastern Trawl

Specifications of wire, chain, and rope include rated breaking strength (BS), specific gravity (SG), and density.

WEB: All web in the trawl should be depth stretched and heat set in the manufacturing process. Mesh sizes listed in the plan are given in “stretched measure”, a standard method of measuring mesh size that includes the length of one knot.

Top, body and wings, side panels ~ 5", 4-mm polyethylene knotted web.

Bottom, body and wings, intermediate ~ 5", 5mm polyethylene knotted web. All polyethylene web in net panels is orange.

Liner ~ 1.25", # 18T three strand nylon knotted web - dyed green.

Chaffing gear ~ 6", 6mm double bar mesh, polyethylene knotted web -orange.

Chaffing strip, bottom~ 5", 5mm double bar mesh, polyethylene knotted web - orange.

WIRE ROPE: ½" 6×19 galvanized fiber core (BS 9,700 kg, 0.62 kg/m), eyes are formed using galvanized reinforced thimbles.

CHAIN: ½" (16 mm) galvanized, long link marine deck lashing chain, grade 70 (BS 20,500 kg, 3.42 kg/m).

FLOATS: Ninety 8" side lug deep-water trawl floats (5.4 lbs buoyancy each) depth rated to a minimum of 2,000 m.

RIBLINES: ¾" Samson Duralon™ 2-in-1® stable braid, white, light bonding (BS 8,800 kg, SG 1.83, 0.27 kg/m).

TWINE: Sewing panels together: 5-mm polyethylene twine, any color other than orange.

Lacing seams: # 21T white, three strand nylon.

Joining top and side seams together: # 21T green three strand nylon.

Joining bottom and intermediate seams: 60T white braided hanging twine.

ROPE: Float lines - 1/4" polypropylene (BS 570 kg, SG 0.95).

Pucker ring lines- Samson 1/4" Duralon™ 2-in-1®(BS 1,270 kg, SG 1.38) Restrictor rope- 1 1/8" Poly Plus™ three strand (BS 10,740 kg, SG 0.91).

Splitting strap- 3/4" Spectra™ braided rope with eye each end (BS 21,773 kg, SG 0.98).

Rope to serve cables- 3/8" polypropylene three strand.

Chaffing gear- Poly hula skirt material.

FOOTROPE: ½" galvanized, long link marine deck lashing chain, grade 70, 79' 6".

8" rubber disc with a 2½” center hole.

Steel plate chain washers- 5" x d" - 2½” center hole.

Chain toggles- 5.5 lbs. each, chain droppers are 6½” long, spaced 18" on center along length of footrope. Toggles are attached to fishing line with 5/16" import trawl shackles. Four hole triangle delta plate, d" steel.

Eastern Bering Sea Slope Bottom Trawl Survey Framing Lines for Poly Nor’Eastern Trawl

Net Plan for Poly Nor’Eastern Trawl

(“Cut Plan” = Total Mesh Counts)

Twine Sizes: top and sides 4 mm bottom and intermediate 5 mm

Trawl Door Rigging Plan Detail for Poly Nor’Eastern Trawl te rn

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Groundgear Construction Plan for Poly Nor’Eastern Trawl ey T ra w l C he ck L is t

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Gulf of Alaska and Aleutian Islands Bottom Trawl Surveys Gear Description for Poly Nor’Eastern Trawl

Netting: Polyethylene, 5" stretch measure - 4 mm top and sides, 5 mm bottom and intermediate.

Headrope: 89' 1" of ½" (6×19) galvanized wire rope wrapped with d" polypropylene rope.

Both eyes have ½" gusseted thimble; 89' 1" doesn’t include the length of either eye.

Headrope length is measure from the top of the nicro sleeve to the top of the nicro at other end.

Top wing is hung over 16.31" per taper combination.

Headrope setback - 18" of ½" long link galvanized alloy chain and connecting hardware.

Bolsh line: 81' 7" plus thimbled eyes of d" (6×19) galvanized wire rope, wrapped with d" polypropylene rope.

Fishing Line: 81' of ½" long link galvanized alloy chain.

Safe working load of 11,300 lbs.

Breastlines: ½" (6×19) galvanized wire rope wrapped with d" polypropylene rope.

Top corner 19' 6", bottom corner 8' 8", bottom side panel 30' 6".

All lengths are measured from the top of nicro sleeve at wing tip and including thimbled eye at ribline.

Riblines: ¾" Samson 2in1® Duralon braided trawl rope.

Riblines are hung at 98% of stretch measure of gored seam.

All measurements are made with 400 lbs of tension on rope.

Gored seams are attached to the ribline using white untreated 60 T braided nylon hanging twine used to tie a benzel every 16".

Roller Gear: 79' 6" bearing to bearing (eye to eye). ¾" (6×19) galvanized wire rope with 14" bobbins (Footrope) and 4" discs.

See attached diagram for more detailed description.

Side Seams: Side seams are laced in each panel individually.

Seams are made by gathering 3 meshes (4 knots) and lacing them together using white, double 21 thread perma-grip® (or like kind) nylon, three-strand twine.

Individual panels are laced together using green, double 21 thread perma-grip® nylon, three-strand twine.

Panels which are secured to framing lines have selvage edge created by gathering 3 meshes as described above.

These selvage edges are hung tight to framing lines using 60 T braided nylon hanging twine.

Flotation: Twenty 12" Cycolac® side lug trawl floats (23 lbs of buoyancy each) hung evenly to headrope starting 1' from wing tip, and four 8" side lug trawl floats (5.4 lbs buoyancy each) hung two each on both sides of center, leaving 3' open in the center of the headrope.

Total buoyancy - 486 lbs.

Splitting Gear: ¾" Spectra® rope spliced 21' with eyes in each end.

The rope is passed through four galvanized rings secured to each ribline 18 meshes from the bottom. A second identical splitting strap is located 38 meshes from the bottom.

Codend: 3½" stretched measure (including 1 knot) polyethelene 4 mm Double Bar mesh.

Four panels cut 30 meshes long by 100 meshes deep.

Two meshes in a gored seam each side, leaving 26 open meshes per panel.

Gored seams are laced together using double 21 T nylon twine.

Riblines in codend are ¾" 2in1® Duralon braided trawl rope, hung at 90% of the stretch measure of the gored seams.

Codend is closed at terminal end using 25 2½" X ¼" galvanized steel rings.

A ¼" Duralon rope is passed through the selvage mesh and a ring is attached to the rope using a cow hitch every 12", with five open meshes between each ring.

The bag is then closed using a e"-¾" hauling clip.

Materials List for Poly Nor’Eastern Trawl

Specifications of wire, chain, and rope include rated breaking strength (BS), specific gravity (SG), and density.

WEB: All web in the trawl should be depth stretched and heat set in the manufacturing process. Mesh sizes listed in the plan are given in “stretched measure”, a standard method of measuring mesh size that includes the length of one knot.

Top, body and wings, side panels ~ 5", 4-mm polyethylene knotted web -orange.

Bottom, body and wings, intermediate ~ 5", 5mm polyethylene knotted web - orange.

Liner ~ 1¼", # 18T three strand nylon knotted web - dyed green.

Chaffing gear ~ 6", 6mm double bar mesh, polyethylene knotted web -orange.

Chaffing strip, bottom~ 5", 5mm double bar mesh, polyethylene knotted web - orange.

WIRE ROPE: ½" 6×19 galvanized fiber core (BS 9,700 kg, 0.62 kg/m), eyes are formed using galvanized reinforced thimbles.

CHAIN: ½" (16 mm) galvanized, long link marine deck lashing chain, grade 70 (BS 20,500 kg, 3.42 kg/m).

e" (16 mm) galvanized, long link marine deck lashing chain, grade 70 (BS 28,670 kg, 5.06 kg/m).

FLOATS: Twenty 12" side lug trawl floats (23 lbs. buoyancy each) depth rated to a minimum of 450 fm. Four 8" side lug trawl floats (5.4 lbs buoyancy each).

RIBLINES: ¾" Samson Duralon™ 2-in-1® stable braid, white, light bonding (BS 8,800 kg, SG 1.83, 0.27 kg/m).

TWINE: Sewing panels together: 5-mm polyethylene twine, any color other than orange.

Lacing seams: # 21T white, three strand nylon.

Joining top and side seams together: # 21T green three strand nylon.

Joining bottom and intermediate seams: 60T white braided hanging twine.

ROPE: Float lines - 1/4" polypropylene (BS 570 kg, SG 0.95).

Pucker ring lines- Samson 1/4" Duralon™ 2-in-1®(BS 1,270 kg, SG 1.38) Restrictor rope- 1 1/8" Poly Plus™ three strand (BS 10,740 kg, SG 0.91).

Splitting strap- 3/4" Spectra™ braided rope with eye each end (BS 21,773 kg, SG 0.98).

Rope to serve cables- 3/8" polypropylene three strand.

Chaffing gear- Poly hula skirt material.

FOOTROPE: (GOA, Aleutian Islands, MACE) ¾" 6×19 galvanized, fiber core wire rope 79' 6", (BS 21,600 kg, 1.41 kg/m) .

4" rubber disc with a 1" hole- wing extensions, center section between bobbins 8" rubber disc with a 2¼" hole - wing extensions.

e" Long link marine deck lashing chain, grade 70.

Laminated rubber “cone style” wing bobbins with a 2½" steel reinforced hole.

Chain droppers 10" in length. Five links of d" chain and one ring 2½"×¼" ¾" barrel clamps Steel plate wire rope washers- 5" ×d"- 1" center hole.

1¼" ID - 1¾" OD heavy hose over bare ¾" wire.

Four hole triangle delta plate, d" steel.

Framing Lines for Poly Nor’Eastern Trawl

Net Plan for Poly Nor’Eastern Trawl

(“Cut Plan” = Total Mesh Counts)

Twine Sizes: top and sides 4 mm bottom and intermediate 5 mm

Trawl Door Rigging Plan Detail for Poly Nor’Eastern Trawl

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Protocol 4: Trawl Construction and Repair

Descriptions of Trawls and Their Rigging

The four bottom trawl surveys conducted regularly by the AFSC utilize three trawls, all of which are constructed at the AFSC Net Loft. The 83-112 Eastern trawl is used for the Eastern Bering Sea shelf survey. The Poly Nor’Eastern trawl is used for the Gulf of Alaska, and Aleutian Islands surveys where it is configured with bobbin ground gear and a two-point attachment of the otter doors to the bridles. The Poly Nor’Eastern trawl is also used for the Eastern Bering Sea upper continental slope survey where is rigged with 8" mudsweep groundgear and a four-point attachment of the otter doors. Information concerning trawl construction and repair is included in the operations manual for each survey. This information includes:

• Description of the construction of the trawl components

• Description of the materials used in the trawl construction

• Net plan

• Rigging plan

• Ground gear plan

• Checklist for verifying trawl dimensions and specifications.

• Trawl Repair Form

The AFSC Net Loft staff will inspect and measure each trawl prior to loading it onto the vessel to ensure that it conforms to the specifications set forth on the survey trawl checklist. In addition, each trawl will have an identification number, stamped on a metal tag, that will be included on all haul forms and trawl repair forms. Whenever the trawl requires repair during survey operations, such repairs will be done following the standards set forth in the following section and documented on the trawl repair form. Components potentially affected by at-sea repairs will be remeasured to confirm that the trawl is meeting specifications.

Gear Repairs Aboard Vessels

At the start of every survey, vessels will be provided with an inventory of supplies used to repair trawl gear during the survey. Materials include web, hardware, floats, breastlines, twine, pre-cut bottom panels (only for the Poly Nor’Eastern trawl), etc. These supplies should provide each vessel with the resources needed to make typical repairs. If a survey vessel has experienced frequent net damage, the FPC should transmit a list of trawl repair supplies to the AFSC Net Loft sufficiently far in advance of the next scheduled port of call to allow time to ship the supplies. To ensure quick access to spare nets, the FPC should locate, at the start of each cruise leg, where spare nets are stored and, if access to the nets could be difficult in less than ideal conditions, store at least one spare net on deck.

Net, doors, and bridles should be examined routinely during every haul back, checking for any damage and noting any repairs that are needed. When large rocks are dumped from the net, codend liners should be checked for damage. The FPC, in consultation with the vessel crew, will determine whether it is more expedient to repair a damaged trawl or to replace the trawl with a spare.

Survey trawls are research sampling tools and the success of our surveys depends on maintaining our survey gear to AFSC standards. The FPC should stress this to fishers responsible for making trawl repairs to ensure that trawls will be replaced if they cannot be repaired to AFSC survey standards. Fishers must follow the trawl repair protocols provided to them at the pre-cruise meeting with personnel from the AFSC Net Loft. In particular, they must replace torn or abraded web with patches or new panels, rather than hand sewing new meshes. Straight tears, however, can be sewn as long as there is no need to build meshes to close the hole. Lacing of holes or tears is not allowed in the body, wings or codend of the trawl. Special attention should be given to repairs involving the inside of the bottom wings (where the bar cut and chaffing strips are sewn to the body). Poor repairs in this area may affect the way the footrope tends bottom. Repairs that should not be attempted aboard vessels include broken headropes, footropes, riblines or rehanging long sections of riblines (repairs that involve more that 25 benzels, approx. 40'). Given the limited deck space aboard our survey vessels, these repairs are difficult to do correctly to ensure the finished product meets our standards.

The FPC is responsible for overseeing net repairs and deciding if a net should be retired. When a net is damaged, repaired, or retired, the Net Repair Form should be completed, noting the net ID number and all damage and repairs made. When retired, the net should be picked and cleaned before it is bundled and stowed.

Bongo nets

Floating or suspended fish eggs and newly hatched larvae are often caught with Bongo nets. The name is due to the perceived resemblance to the eponymous paired drums. The mesh size is very fine, ranging from 20 µm up to 1000 µm (1 mm), thus allowing eggs and larvae with sizes of order 1-20 mm to be caught. The nets, mounted on a rigid yoke, can be towed from the surface to near the bottom for sampling throughout the water column.

In order to obtain quantitative samples of phytoplankton, zooplankton, other invertebrates, and large fish, it is critical to estimate the volume of water that is filtered during the sample. Most bongo and ring nets are deployed with mechanical or electronic flow meters positioned in the mouth of the net to quantify the volume of water filtered.

Multiple Opening/Closing Nets and Environmental Sampling System (MOCNESS)

The Multiple Opening/Closing Nets and Environmental Sampling System (Fig. 17), which is generally known by its acronym MOCNESS, is an operational, widely used system for capturing plankton at specific depths on the command of the operator. It also routinely carries a number of sensors for measuring environmental parameters as it is towed. These sensors measure, for example, conductivity, temperature, pressure, fluorescence, optical transmission, dissolved oxygen, and light levels.

As a system for capturing zooplankton, MOCNESS in its current configuration consists of a number of nets.

These are designed for towing at a 45 degree angle. They can be opened and closed on command from the towing vessel. Originally, the system carried a total of nine nets. The mesh size of the original nylon nets, each 6-m long, was 333 µm. The opening of the original nets was rectangular, 100×141 cm, with the dimensions chosen so that the projected area of the system as oriented during trawling relative to the tow direction would be 1 m2 (Fig. 18). Basic alternate models of MOCNESS use sets of identical nets with one of these mouth openings: 0.25, 1, 2, 4, 10, and 20 m2. Each net is terminated with a bottle or jar that holds the catch.

The cable used for towing MOCNESS is electrically conducting. This enables power and commands to be sent from the towing vessel to the system, and environmental data from the on-board sensors to be transmitted back to the towing vessel in the same way.

In addition to its wide use in oceanographic research, MOCNESS has provided inspiration for other developments, as indeed it has been inspired by its predecessors. One notable recent development is a multiple opening and closing pelagic trawl system designed and built by the Institute of Marine Research, Bergen. This system, called Multi-Sampler, enables pelagic fish to be caught at depths selected by the operator during deployment, similarly to the way that capture depths are selected by the operator of

MOCNESS.

Northwest Fisheries Science Center

Aberdeen Sampling Trawl 85/105/5-1/2”

Gear Description version 2.2, November, 2009

Simon V., S. Patterson

Netting: All netting to be Olivene polyethylene. Netting to be depth stretched and heat set. 5-1/2” stretch measure (include one knot) 5.0mm double twine all heavy edges, bottom wings, bottom bosum, bottom tear seam, top wings. 5-1/2” stretch measure 5.0mm single twine bottom body, 5-1/2” 4mm single twine side overhang, side wing, and top overhang. 5-1/2” stretch measure 3.0mm single twine top body, side body. 5-1/2” stretch measure 4.0mm single twine tapered intermediate. All hand sewn seams to be of similar, or greater, polyethylene twine, of a color different than the netting. Refer to net drawing for number of meshes to be added for gored seams.

Belly Band A 5 mesh wide “belly band” composed of 5-1/2” double 5.0mm olivine located 60 meshes back from the footrope, provides security approximately half way down the center bottom panel of the

Aberdeen sampling trawl. A 3 mesh wide 5-1/2” double 5.0 olivene panel runs the length of the bottom panel on both the port and starboard side.

Headrope: 9/16” 6x19 galvanized, fiber core wire rope. Total length is 85’ 1-1/4”. Wire built in 3 pieces. One center bosom piece 44’ 8-½”. Two wing pieces of 19’10-¼”. Reinforced (with gusset) thimble each eye. Wire is measured from inside bearing point of first eye to inside bearing point of second eye.

Total length includes connecting hardware. Wire to be wrapped with 3/8” polypro. Eighteen 12” diameter side lug floats to be attached to headrope; refer to plan provided on net drawing. Floats to have working depth rating of 1500 meters (820 fathoms), with minimum buoyancy of 17.7 pounds.

Refer to net drawing for details.

Bolsh Line: 3/8” 6x19 galvanized fiber core wire rope. Total length is 66’ 5/8” including four ½” hammerlock connectors, measurement is from bearing point on the terminal port hammerlock to the bearing point on the terminal starboard hammerlock . Reinforced thimble each eye. Built in 3 pieces: 1 piece 46’ 2-½”, 2 pieces at 9’4-¼”. Wrapped with 3/8” polypropylene line. Wire is measured from inside bearing point of first eye to inside bearing point of second eye. Total length includes connecting hardware. Refer to net drawing for details.

Fishing Line: ½” grade 70 or 80, long link chain. Total length is 65’ 7-1/2” Built in 3 pieces: 1 piece 45’8-½”, 2 pieces at 9’4-¼”. Chains are measured from inside bearing point of first link to inside bearing point of second link. Total length includes two 5/8” and two ½” connecting hammerlocks The overall measurement is from the bearing point on the port terminal hammerlock to the bearing point on the starboard terminal hammerlock. Refer to net drawing for details.

Breastlines: 9/16” 6x19 galvanized fiber core wire rope. Total length of each piece is 23’. Two pieces bottom breastline 22’10-¼” each. Reinforced (with gusset) thimbles each eye. Wire is measured from inside bearing point of first eye to inside bearing point of second eye. Total length includes connecting hardware. Wire to be wrapped with 3/8” polypropylene line. Refer to net drawing for details.

Lacing: All net panel edges are to be laced individually. Refer to net drawing for number of meshes to be included in laced edge. Net panel edges are laced with #21 perma grip white. Individual panels are laced together with #60 perma grip green to form gored seam. Net panel edges along framing lines

(headrope, breastline, bolshline) may be laced following the same standard as laced edges. Laced panels are attached to the framing lines using #60 braided nylon twine.

Aberdeen Sampling Trawl 85/104/5-1/2’

Gear Description

Riblines: 1-1/4” polypropylene 8-braid line. Riblines to be made to 95% of length of stretched measure of gored seam. Also referred to as 5% hang-in. 400 pounds tension applied to ribline while marking lengths. Riblines are built in sections through out their length, refer to net drawing for details. The forward bottom riblines include three chain links (½” grade 70 or 80 long link) lashed to their forward end, for attachment to the bolshline/fishing junction. The chain links are included in the overall length of the ribline. Gored seams are attached to riblines every 16” with #60 braided nylon twine, using benzel lashing technique. Every benzel lashing must be passed (“stuck”) through the ribline. Riblines are attached at breaks with #60, or greater, braided nylon twine using benzel lashing. All lashings to be treated with knot hardener. Refer to net drawing for details.

Intermediate: 5-1/2” stretch measure 5.0mm single Olivene netting, 80 open meshes around by 100 meshes long.

1-1/4” 8-braid polypropylene riblines, hung in at 7%. Laced gore is attached to riblines with standard benzel lashing, “stuck” through riblines. Intermediate is sewn onto aft end of net. Two container lines, 1” polypropylene by 13’ in length, are spaced 12” and 48” respectively from the center of the codend attachment benzel. Four 10” floats are attached to top riblines last 50 meshes of intermediate. Two 12” floats are attached to top riblines at intermediate/net seam. Refer to net drawing for details.

Codend: 4-1/2” BK (inside the knots) 5.0mm double Olivene netting, 80 open meshes around by 50 meshes long. 1-1/4” 8-braid polypropylene, or equivalent, riblines, hung in at 10%. Laced gore is attached to riblines with standard benzel lashing, “stuck” through riblines. Codend sewn onto aft end of intermediate. Six container lines, 1” polypropylene by 13’ in length, are spaced evenly along the length of the codend approximately beginning 34” down from the codend attachment benzel with the last container line 6” from the end of the codend. 1” masterlinks (splitting links) are lashed in-line into riblines 18 meshes forward of aft end of codend. Splitting links are 1” X 7” X 3-1/2”. A 1” x 14’ polydacron lifting strap is installed through the splitting links. 3/8” braided polyester flymeshes are attached to the aft end of the codend, at a rate of 1 flymesh for two codend meshes.

Chaffing gear is one piece, 5-1/2” stretch measure 5.0mm PE netting, 46 meshes wide by 50 meshes long. The chaffing gear covers the bottom panel and the lower ½ of each side panel. A total of 100 pounds of chafe rope is attached to the chaffer. Two 10” floats are attached to top riblines of codend. Refer to net drawing for details.

Liner: 1-1/2” #24 twisted polypropylene knotted netting. Liner is one piece, 352 meshes around by 400 meshes deep. Liner is installed at midpoint of intermediate and extends a minimum of 42 inches past the aft end of the codend. Refer to net drawings of intermediate and codend for details.

Aberdeen Sampling Trawl 85/104/5-1/2’

Gear Description

Footrope: Built in seven sections, 105’ overall length. All sections built on ½” long link grade 70 or 80 chain, with ½” Campbell coupling links. Overall length of footrope includes all coupling links and butterfly plates. One bosum section, measuring 15’ 2” bearing point to bearing point of chain, with

10” rubber discs, chain toggles with 10” droppers on 24” centers. Two aft wing sections, measuring

11’8- ½” bearing point to bearing point of chain, with 8” rubber discs, (punched belt rubber material) chain toggles with 10” droppers on 24” centers. Two forward wing sections, measuring

11’8-1/2” bearing point to bearing point of chain, with 8” rubber discs (punched belt rubber material), chain toggles with 10” droppers on 24” centers. Two wing extensions, 19’10” bearing point to bearing point of chain, with 4” rubber discs for filler, 8” rubber discs on 18” centers. A ½” butterfly plate, preceded by a 10” laminated wing bobbin, connect the wing extension to the net and footrope wing, and is included in the overall length of the wing extension. ½” black trawl shackles attach the footrope to the net. Four footrope bottom contact sensor attachments comprised of 6 links of long link chain attached to a rotating toggle are installed in bosum section. From the center of the footrope, the first is located 3’ and the second is located at 5’ from the center on both the port and starboard sides of the net. Refer to net drawing for details.

Floats: Headrope: Eighteen 12” (300 mm) UBE dog eared floats; CT3015 with a depth rating of 1,500 meters, buoyancy of 76.5 N or 7,80 kgf, with hole diameter of 25 mm, and an overall wt of 5.7 kg are equally spaced sequentially (A through I) on the port and starboard sides. Float A placement measures 7-1/2” from the center of the headrope to the center of the float A attachments (CHR-

CF). Float B is placed 43-1/2” from the center of the float A attachments to the center of float B attachments (CF-CF). Float C is placed 37” from the center of float B attachments and float C attachments (CF-CF). Float D is placed 72-1/2” from the center of float C attachments and float D attachments (CF-CF). Float E is placed 72-1/2” from the center of float D attachments and float E attachments (CF-CF) and also measures 37” from the bearing point of the thimbled eye of the center section of the headrope and float E attachments. Float F is placed 19” from the bearing point of the thimbled eye of the port or starboard headrope section which joins the center section of the headrope section (BP-CF). Float G is placed 34” from the center of float F attachments and the center of float G attachments (CF-CF). Float H is placed 120” from the center of the float G attachments to the center of float H attachments (CF-CF). Float I is placed 36” from the center of float H attachments to the center of float I attachments (CF-CF) and also measures 31” to the bearing point of the terminal thimbled eye (BP-CF) .

Intermediate: Four 10” (254 mm) Panther (preferred) or Castro (5.1 pounds, 2310 grams, 1800 meter working depth, 9 pounds buoyancy, 21 mm hole size) , and two 12” UBE dog eared floats provide floation for the intermediate. From the front of the intermediate, the first pair is composed of the two 12” UBE floats and they are lashed with 333 to the top (port and starboard) 8 braid 1-

1/4” riblines, six feet (72 inches) from the center of the benzel which attaches the intermediate to the net body. The second pair of floats are both 10 inch (panther or castro) 1500 meter rated floats, and are located 12 feet up from the center of the benzel that attaches the codend to the intermediate. The last pair are both 10 inch (panther or castro) 1500 meter rated floats, and are located 2 feet up from the center of the benzel that attaches the codend to the intermediate.

Codend: Two 10” (254 mm) Panther (preferred) or Castro dog eared floats (5.1 pounds, 2310 grams, 1800 meter working depth, 9 pounds buoyancy, 21 mm hole size) provide the only floatation on the NWFSC survey trawl codend. The two 10” floats are centered down eight feet from the center of the benzel that attaches the codend to the intermediate.

Net Number

Person of Record

Date

Page 1 of 12 Difference (FL-FR) Percent (FR/FL)

NWFSC Aberdeen 85/104 Sampling Trawl – Bottom Bottom Wing

Required Actual

Port Starboard

5.0 mm Double Olivene (Y/N)

5.5” Center knot Center knot (CC) (Y/N)

3 (1 seized in) / 34 (width count)

27.0 Meshes Deep (depth count)

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Web is free of holes and in good condition? (Y/N)

If No, repairs made? Describe Repairs: Describe Repairs:

Forward and Aft Side Guards

Required Actual

Port Starboard

5.0 mm Double Olivene (Y/N) Forward Aft Forward Aft

5.5” Center knot Center knot (CC) (Y/N)

3 / 3 Forward - 3 / 3 Aft (width counts)

50.0 Forward / 34.0 Aft Meshes Deep (depth counts)

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

If No, repairs made? Describe Repairs: Describe Repairs:

Riblines

Port Starboard

Ribline is composed of 1 ¼” Ultra blue (Y/N)

Benzel lashing knots are every 16”? Measure a minimum of 4.

Ex. 15,16,16,17 Ex. 15,16,16,17

Benzel lashing knots are composed of #60 white braided nylon using benzel or rose lashing technique (Y/N)

Benzels lashings are stuck through the ribline? (Y/N)

Net body is hung in at 5%? (estimate) (Y/N)

Bottom Guard Panel

Required Actual

5.0 mm Double Olivene (Y/N)

5.5” Center knot to Center knot (CC) (Y/N)

137 / 127 (Width) (Mesh counts)

10.0 (Deep) (Mesh counts)

Net panel edges are laced with #21 perma grip white

(Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Web is free of holes and in good condition? (Y/N)

If no, repairs made?

Forward and Middle Bottom Belly

Required Actual Forward Actual Middle

5.0 mm Olivene (Y/N)

5.5” Center knot to Center knot (CC) (Y/N)

120 / 70 Forward / 64 / 30 Middle (Width) (Mesh counts)

50.0 Forward / 34.0 Middle (Deep) (Mesh counts)

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Web is free of holes and in good condition? (Y/N)

If no, repairs made?

Notes:

• CC Denotes Center knot to Center knot. Measure a minimum of two meshes (11.0”)

• When checking web material, count the orange tracer in the green olivene to arrive at #mm

• Flag all holes, bad web panels, large field repairs, frayed web, or inconsistencies and bring to the attention of net loft personnel. Make sure repairs or replacements are made with new web, line, hardware, or cables.

• Mesh counts are open meshes. Refer to reference diagram for total number meshes in panel. Numbers in parenthesis represent total number of meshes in entire panel, open number represents open meshes.

Aft Bottom Belly

Required Actual

5.0 mm Olivene (Y/N)

5.5” Center knot to Center knot (CC) (Y/N)

35 / 20 (Width) (Mesh counts)

50.0 (Deep) (Mesh counts)

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Web is free of holes and in good condition? (Y/N)

If no, repairs made?

Open Mesh Count

Required Actual

Belly Band

Required Actual

5.0 mm Double Olivene (Y/N)

5.5” Center knot to Center knot (CC) (Y/N)

75 / 71 (Width) (Mesh counts)

5.0 (Deep) (Mesh counts)

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Web is free of holes and in good condition? (Y/N)

If no, repairs made?

Reference Diagram

Forward

Mid

Aft

Ver

2.41

Date

Person of Record

Net Number NWFSC Aberdeen 85/104 Sampling Trawl – Sides Reference Diagram

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Describe Repairs:

Describe Repairs: If No, repairs made?

Web is free of holes and in good condition?

(Y/N)

50.5 Meshes Deep (depth count)

60 / 50 (width count)

5.5” Center knot Center knot (CC) (Y/N)

4.0 mm Olivene (Y/N)

Starboard Port

Actual Required

Forward Side Panel

40.5 9.5

Netting Checklist

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60

(Y/N)

50.0 (41.5 / 8.5) Meshes Deep (depth count)

1 / 55 (width count) (this is the double mesh at the very tip of the wing. 3 full meshes, with two seized in, to make it look like 1 open mesh at the very tip.

5.5” Center knot Center knot (CC) (Y/N)

5.0 mm Olivene (Y/N)

Starboard Port

Actual Required

Forward Side Wing

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60

(Y/N)

40.5 Meshes Deep (orange seam to seam)

2 / 10 (width count)

5.5” Center knot Center knot (CC) (Y/N)

5.0 mm Double Olivene (Y/N)

Starboard Port

Actual Required

Bottom Wing Guard

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

40.5 Meshes Deep (depth count) (orange seam to seam)

4 / 4 (width count) (orange seam to orange seam)

5.5” Center knot Center knot (CC) (Y/N)

5.0 mm Double Olivene (Y/N)

Starboard Port

Actual Required

Front Top Wing Guard

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with

#60 perma grip green to form gored seam

(Y/N)

Web is free of holes and in good condition? (Y/N)

100.5 Meshes Deep (depth count)

53 / 30 (width count)

5.5” Center knot Center knot (CC) (Y/N)

3.0 mm Olivene (Y/N)

Starboard Port

Actual Required

Middle Side Panel

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with

#60 perma grip green to form gored seam (Y/N) condition? (Y/N)

50.5 Meshes Deep (depth count)

29 / 20 (width count)

5.5” Center knot Center knot (CC) (Y/N)

4.0 mm Olivene (Y/N)

Starboard Port

Actual Required

Aft Side Panel

Notes:

• CC Denotes Center knot to Center knot. Measure a minimum of two meshes (11.0”)

• When checking web material, count the orange tracer in the green olivene to arrive at #mm

• Flag all holes, bad web panels, large field repairs, frayed web, or inconsistencies and bring to the attention of net loft personnel. Make sure repairs or replacements are made with new web, line, hardware, or cables.

•Mesh counts are open meshes. Refer to reference diagram for total number meshes in panel. Numbers in parenthesis represent total number of meshes in entire panel, open number represents open meshes.

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Describe

Repairs:

Describe

Repairs: If No, repairs made?

Web is free of holes and in good condition?

(Y/N)

50 Meshes Deep (depth count)

4 / 10 (width count)

5.5” Center knot Center knot (CC) (Y/N)

5.0 mm double Olivene (Y/N)

Starboard Port

Actual Required

Bottom Side Panel

Orange seam

Ver 2.41

NWFSC Aberdeen 85/104 Sampling Trawl – Topver 2.41

Date

Person of Record

Net Number Netting Checklist

Reference Diagram

Web is free of holes and in good condition? (Y/N)

If no, repairs made?

Panel edges are laced individually with #21 perma-grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Open mesh count on headrope – 34

10.0 (Depth count)

42/42 (width count)

5.5” CC (Y/N)

5mm Double Olivene (Y/N)

Actual Required

Front Double Guard

Notes:

• CC Denotes Center knot to Center knot. Measure a minimum of two meshes (11.0”)

• When checking web material, count the orange tracer in the green olivene to arrive at #mm

• Flag all holes, bad web panels, large field repairs, frayed web, or inconsistencies and bring to the attention of net loft personnel. Make sure repairs or replacements are made with new web, line, hardware, or cables.

• Mesh counts are open meshes. Refer to reference diagram for total number meshes in panel. Numbers in parenthesis represent total number of meshes in entire panel, open number represents open meshes.

Net panel edges are laced with #21 perma grip white (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N) condition? (Y/N)

22.5 Meshes Deep (depth count)

4 (1 seized in)/65 (width count)

5.5”Center knot Center knot (CC) (Y/N)

Double 5mm Olivene (Y/N)

Starboard Port

Actual Required

Front Top Wing

Benzels lashings are stuck through the ribline? (Y/N)

Net body is hung in at 5%? (estimate) (Y/N)

Benzel lashing knots are composed of #60 white braided nylon using benzel or rose lashing technique (Y/N)

Ex. 15,16,16,17

Ex. 15,16,16,17 Benzel lashing knots are every 16”? Measure a minimum of 4.

Ribline is composed of 1 ¼” Ultra blue (Y/N)

Starboard Port

Actual Required

Riblines

If no, repairs made?

Web is free of holes and in good condition? (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Net panel edges are laced with #21 perma grip white

(Y/N)

50.0 (Deep) (Mesh counts)

35/20 (Width) (Mesh counts)

5.5” CC (Y/N)

4 mm Olivene (Y/N)

Actual Required

Aft Top Panel

If no, repairs made?

Web is free of holes and in good condition? (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Net panel edges are laced with #21 perma grip white (Y/N)

27.0 (Deep) (Mesh counts)

164/138 (Width) (Mesh counts)

5.5” CC (Y/N)

4 mm Olivene (Y/N)

Actual Required

Forward Top Panel

If no, repairs made?

Web is free of holes and in good condition? (Y/N)

Individual panels are laced together with #60 perma grip green to form gored seam (Y/N)

Net panel edges are laced with #21 perma grip white (Y/N)

100.5 (Deep) (Mesh counts)

137/36 (Width) (Mesh counts)

5.5” CC (Y/N)

3 mm Olivene (Y/N)

Actual Required

Main Top Panel

NOTES:

(1) Intermediate measures 80 meshes around x 100 meshes deep. - (2) Intermediate netting is 5.5” CC

5.0mm PE. – (3) Liner:1-1/2” #24 twisted PE. - (4) Attach liner on last 50 meshes of intermediate. - (5)

Intermediate zipper located on bottom panel, five meshes up from the beginning of the liner. – (6)

Riblines 1-1/4” Polypropylene 8-braided rope. – (7) Intermediate ribline length 7% less than netting, laced gore is attached to riblines with standard benzel lashing, stuck through riblines. – (8) Liner 352 meshes around, 88 per side. - (9) Container lines are to be spliced eye to eye, floating under riblines.

Meshes

Meshes

Container lines: 1” PP Rope X 12’ 6” B/B, 8 Total. 48” spacing on the intermediate, approximately 40” spacing on the codend.

Lines are secured to bag with “W” lashes, two per side.

•Zipper: 5 meshes from liner

•5 ½” CC (Center knot to

Center knot) 5.0mm single

Olivene

Riblines are attached at break with #60 or greater nylon twine using benzel lashing technique and treated with knot hardner

Lifting strap composed of 1” X 14’ polydacron through four 1” X 7 X 31/2” splitting rings which are lashed – in line into riblines

Chaffing gear is one piece, 5-1/2”, 5.0mm PE netting, 46 meshes wide by 50 meshes long. The chaffing gear covers the bottom panel and the lower ½ of each side panel.

Codend netting composed of 4-½” BK (inside the knots) 5.0 double

Olivene, 80 meshes around by 50 meshes long. Codend riblines are composed of 1¼” -8 braid polypropylene and hung in at 10%

Meshes

Liner is composed of 1½” #24 twisted polyethylene 352 meshes around by 400 meshes deep. Liner hung in very loose to riblines

(15% -20%) and extends to a minimum of 3 ½ feet past the aft end of the codend

3/8” Nylon or Polyester braided rope make one flymesh per two codend meshes

Reference Diagram

Net Number

Person of Record

Date

NWFSC Aberdeen 85/104 Intermediate and Codend Checklist

Intermediate

Required Top Bottom Port Stbd

5 mm Olivene (Y / N)

5 ½” CC (Center knot to Center knot) (Y / N)

20 Meshes Wide

(enter count)

100 Meshes Deep

(enter count)

Intermediate Details

Required Actual

Gores are lashed to ribline every 16” using benzel lashing technique? (Y / N) (measure a minimum of 3 per ribline, one top - one bottom ribline per side)

Example: Y/Top=15, 16, 16.

Y/Bottom=16,17,16.

Port

Example: Y/Top=15, 16, 16.

Y/Bottom=16,17,16.

Starboard

Port

Starboard

Benzels are stuck through ribline? (Y / N)

Riblines are hung in at 7% (estimate) (Y / N)

Benzels are in good condition? Please rate on a level of

1-5. If less than three, they must be replaced 1 2 3 4 5 1 2 3 4 5

Benzels are composed of #84 twine? (Y / N)

Riblines are composed of 1¼” 8 braid Ultra Blue? (N / Y)

Liner starts at 50 meshes from the beginning? (Y / N)

Container Lines and Lifting Strap

Container

Line

Distance from center of the benzel attaching the codend

Required Actual

Composed of 1”

Polypropylene

(Y / N)

Length of

Container line /

Strap (feet, inches)

Secured to Int. and Codend with 6 “W”’s 1 on top and bottom, 2 on each side

(Y / N)

Line/strap is spliced together eye to eye

(Y / N)

1 48” (4’ 0”)

2 12” (1’ 0”)

3 36” (3’ 0”)

4 69” (5’ 9”)

5 102” (8’ 6”)

6 135” (11’ 3”)

7 168” (14’ 0”)

8 200” (16’ 8”) / 6” - Last container line should be 6” from end of codend

Lifting Strap

156” (13’ 0”) /

Located 18 Meshes from aft end of Codend (Y / N)

Feet, inches

(Y / N)

Composed of 1”

Polydacron

(Y / N)

Inst…