Danish Seining

Question 1

What is seining?

Answer 1

A method of fishing that uses s seine or dragnet

Question 2

Describe a seine

Answer 2

Is a net that hands vertically in the water with its bottom edge held down by weights and its top edge buoyed by floats

Question 3

How can seines be deployed?

Answer 3

From shore as a beach seine
From a boat

Question 4

When was the Danish seine first used?

Answer 4

Since 1848, first used to catch plaice

Question 5

How does a Danish seine work?

Answer 5

Ropes keep the net open and herd the fish towards the net

Question 6

What fish are caught using beach seining?

Answer 6

-Sardines
-Mackerel
-Sea bream
-Flat fish

Question 7

How is a beach seine deployed?

Answer 7

Using a single boat, hauled in by hand

Question 8

What are the disadvantages of Danish seining?

Answer 8

-Requires relatively smooth seabed
-Relatively calm weather and low current speeds
-Difficult to use during the night or in fog
-Workload of fishers is higher
-Demands better navigational skills

Question 9

Why is Danish seining falling out of fashion?

Answer 9

-Current trends towards targeting of bottom fish in deeper water
-Number of vessels using this type of fishing has declined

Question 10

What are the advantages of Danish seines?

Answer 10

-Low power and fuel consumption
-Cheaper and less bulky than a trawl, can be used on smaller boats
-Tows are efficient at herding fish into codend
-If good navigational knowledge is there, seine can be used very effectively
-Less damaging to sea bed
-Better quality end product as fish spend less time in the net

Question 11

What is the minimum mesh size for Danish seines?

Answer 11

135 - 150 mm depending on fishing areas

Question 12

What fish are caught using Danish seines?

Answer 12

-Flatfish like plaice, dab, long rough dab, witch flounder and mergrim
-Cod and haddock in certain waters

Question 13

What are vessels that seine called?

Answer 13

Seiners
Vessels display a flashing amber light when actively fishing

Question 14

What does Danish seining require to be successful?

Question 15

What does Danish seining require to be successful?

Question 16

What does Danish seining require to be successful?

Answer 16

-Skill operation is extensive knowledge is required
-Locating the fishing grounds
-Accurate rigging of the gear
-Consideration of tidal streams with relation to the gear

Question 17

How does Danish seining work?

Answer 17

-Gear is towed until both ropes are under strain, then winch is engaged
-Winch speed is gradually increased from 15 m/minute to 90m/minute, when around half of ropes are in and the gear has closed up
-Vessels maintains its position or is getting hauled astern by the net

Question 18

What is the sets of deploying a Danish seine net?

Answer 18

1. Vessel shoots dhan and begins shooting ropes
2. One set of ropes shot 2,000 - 3,500 m long
3. Seine net shot
4. Other set of ropes shot 2,000 -3,500 m long
5. Circle closes and vessel picks up dhan and starts to tow both ropes and net

Question 19

Describe the Danish seine net

Answer 19

-Poor man’s trawl
-Resembles a trawl with wings, belly and codend
-Operated differently, no otter doors
-Operated with a set of warps (towing lines, drag lines)

Question 20

Describe physical structure of Danish seine net

Answer 20

-A central bag with lateral wings
-Extends 25 -30cm on either side
-Footrope / ground-gear weights and headrope floats

Question 21

What happens during towing?

Answer 21

Warps are gradually pulled together, herding the fish in front of the seine