Fishing equipment

Question 1

Floatline(cork line)

Answer 1

Floating line at top of net that has corks attached. Creates buoyancy of the net.

Question 2

Leadline

Answer 2

bottom of net weighted with lead on or inside of a line

Question 3

Scotchman

Answer 3

large red/orange float at the end of the net

Question 4

Drum

Answer 4

Large metal spool that holds the net

Question 5

Roller

Answer 5

(important part of equipment) mechanical tube that revolves and assists in letting the net out, or bringing it into the boat (forward or reverse). It also keep the net from being tangled.

Question 6

Gillnetting - 3 points

Answer 6

• Rectangular hanging nets set from stern or bow of boat with corkline (floating) and lead line (sinking) that create opposing tension to create float.
• Buoyancy can be aligned to float or to sink to the bottom depending on species
• Single net sheet

Question 7

Gillnets are used to catch (in differing areas) :

Answer 7

Bony fishes
Squid
Crustaceans
Seals
Cetaceans

Question 8

Net

Answer 8

Hangings: Thick twine knotted together (with special knots) and into the mesh that attaches to the corkline. It makes sure the floats don’t move around, but also attached the web to the corkline.

Web: webbing of net

Question 9

Trammel net

Answer 9

special net that has a few layers of netting for entanglement.

Question 10

Net specifications for gillnetting

Answer 10

Measured by
Bar length: measured from knot to knot

Stretched mesh: sum of two bars → This is the norm for scientific lit.

Question 11

Gillnet “catch processes” - note relation between net size and type of catch

Answer 11

Snagged (small mesh size): head (in front of gills) caught in mesh

Gilled (medium mesh size): gills caught in mesh

Wedged (large mesh size): body (behind gills) caught in mesh

Entangled (all net
sizes): Fish wrapped into netting. Could be caught in teeth, fins, etc.

Question 12

Gillnet Hang Ratio

Answer 12

• length of the net : length of cork line
• Ex. 4:1 = 4 lengths of net : each length of cork line
• Dense net = greater ratio (5:1) = more likelihood of entanglement
• Less dense net = lower ratio (2:1) = , more likelihood of being gilled - “bouncing off”

Can use hang ratio to fish more selectively

Question 13

Purse Seining

Answer 13

large nets set up in a circular shape then is slowly reeled in from the bottom to create a bowl then pulled into the boat.

Question 14

% of salmon commercial catch by seining

Answer 14

50%

Question 15

Seining Definitions:

Drum:

Purseline:

Skiff:

Bunt:

Roller:

Rings:

Answer 15

Drum: large spool net is stored on

Purseline: bottom line used to purse net through brass rings into a bag or bunt / pulls the net up like a drawstring bag

Skiff: small & powerful boat that deploys seine from vessel and pulls it back

Bunt: bag created when seine is pursed

Roller: revolving drum bringing in net (help from tangling)

Rings: Large metal rings spaced on bottom of net. Purseline goes through and draws up between.