Shrimp bycatch reduction device data form and instructio

NMFS Observer Programs' Information That Can Be Gathered Only Through Questions

Shrimp Bycatch Reduction Device Data Form Instruction v.2 2010

WCGOP: West Coast Groundfish Observer Program

OMB: 0648-0593

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Shrimp Bycatch Reduction Device Data Form Instruction
Trip #: Document the Trip number generated by the WCGOP database.
Fish Ticket #: Document the Fish Ticket number(s) for the Trip.
1. Double vs Single Rigged: Check the single rigged box if the vessel was fishing with one net and the double rigged box if
the vessel was fishing with two nets.

Double Rigged – Ask the skipper if the BRD’s are of equal size. If yes, measure one BRD. If no,
measure both BRD’s.

2. Style of Grate Observed and Measurements: Check the box that best describes the BRD being used by the vessel.
Below are photo representations of the hard-paneled BRD’s. If the BRD being used is not rigid with bars, it is a soft-paneled
BRD.

Single-Ringed BRD

Double-Ringed BRD

Folding BRD

Single circular ring to which
bars are attached

Outer circular ring with inner concentric ring
to which bars are attached.

Folds via hinges into hemispheres;
usually single ringed

Make the appropriate measurements, based on the BRD type. Measurements are to the whole millimeter (mm).

Hard-Paneled BRD’s

Hard Grating Measurements
Single-Ringed BRD
1. Measure the diameter of the outside ring (a)
2. Measure the distance between the bars at the widest point. (c)
Double-Ringed BRD
1. Measure the diameter of the outside ring (a)
2. Measure the diameter of inside ring (b)
3. Measure the distance between the bars at the widest point. (c)

Soft-Paneled BRD’s

Soft Grating Measurements
1. Stretch the mesh in the BRD by pulling
two knots away from each other.
2. Measure the distance between the knots,
in centimeters.

Folding BRD
1. Measure the diameter of the outside ring (a)
2. Measure the diameter of inside ring (b) (if double-ringed)
3. Measure the distance between the bars at the widest point. (c)
WCGOP Shrimp BRD v.2 January 2010

OMB Control No. 0648-0593 expires 9-30-2012

BRD Shrimp Vessel Data Form
Trip #

Fish Ticket #

1. Is the vessel single or double rigged?
Single (go to question 2)
Double
Are the BRD’s the same size on both nets?
YES – Measure one BRD

NO – Measure both BRD’s

2. What type of BRD is vessel using? Make the appropriate measurements.*

Single-Ringed
BRD A
Outside Diameter of Grate: _______ mm

BRD B
Outside Diameter of Grate: _______ mm

Maximum distance between bars: _______ mm

Maximum distance between bars: _______ mm

Double-Ringed
BRD A
Outside Diameter of Grate: _______ mm

BRD B
Outside Diameter of Grate: _______ mm

Outside Diameter of Inner ring: ______ mm

Outside Diameter of Inner ring: ______ mm

Maximum distance between bars: _______ mm

Maximum distance between bars: _______ mm

Folding
BRD A
Outside Diameter of Grate: _______ mm

BRD B
Outside Diameter of Grate: _______ mm

Outside Diameter of Inner ring: ______ mm

Outside Diameter of Inner ring: ______ mm

Maximum distance between bars: _______ mm

Maximum distance between bars: _______ mm

Soft-paneled (Mesh)
BRD A
Distance between knots: _______ mm

BRD B
Distance between knots: _______ mm

*Measure to the nearest millimeter.

WCGOP Shrimp BRD v.2 January 2010

OMB Control No. 0648-0593 expires 9-30-2012


File Typeapplication/pdf
File TitleMicrosoft Word - Shrimp Bycatch Reduction Device Data Form Instruction.doc
Authorjcramer
File Modified2009-12-16
File Created2007-04-16

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