Fishing nets - Active fishing gear
Beach seine nets
Beach seine nets for fisheries research and common use
products marked by this sign are also suitable for scientific research
- used for active fishing in ponds, rivers, reservoirs and other not drained water bodies
- beach seine net samples fish near the shore
Fish are sampled – caught by hauling the net from one or both ends
Usage:
- fishing in non-drained ponds, reservoirs, lakes, rivers etc.
- removing part of fish stock from non-drained ponds
- obtaining samples of fish
Advantages:
- quick flexible usage where needed
- ease of use with low demand of manpower (minimum 2 – 4 fishermen)
- effective fishing
- caught fish suffer minimal damage
- possible to control amount of fish caught
Design:
- PA – polyamide, PES – polyester knotless net with square or diamond-shaped mesh
- mesh size: 2 - 30 mm
- thread diameter: 0.01 – 1.4 mm (technical specification 210/4 – 210/28, see details of net swatch)
- without bag – one-depth net – net has uniform depth on its all length
- with bag – two(three)-depth net – net has deeper core
- the upper line has floats
- the lower line has lead line attached
Beach seine nets – used for both fry and adult fish sampling
Usage
- used for sampling – fry and smaller fish species (up to 10 cm)
- used for species composition and abundance assessment
Design
- polyester net with mesh size 2 mm
- polyamide net with mesh size 4, 6 and 10 mm
- thread diameter 0.5 – 1.4 mm – (210/4 – 210/28)
- see table below for recommended lengths, heights and design
- light beach seine nets designed for field
- 10x3 cm floats
- Lead line 80 g/m
For the beach seine net to be most effective, it is necessary to shrink the net edge to at least 2/3 from initial height.
We make beach seine nets in recommended and tested sizes for research institutes
Light design – one-depth net:
| mesh | thread thickness | core height - m | recommended length |
|---|---|---|---|
| 2 | Tyl | 2, 3, 6 | 10 - 30 m |
| 4 | 210/4 | 2, 3, 4 | 10 - 30 m |
| 6 | 210/6 | 2, 3, 4 | 10 - 50 m |
| 10 | 210/14 | 2, 3, 4, 6 | Od 10 - x m |
Heavy design – one-depth net:
| mesh | thread thickness | core height - m | recommended length |
|---|---|---|---|
| 6 | 210/6 | 2, 3, 4 | 10 - 50 m |
| 10 | 210/14 | 2, 3, 4, 6 | from 10 - x m |
We make beach seine nets according to each customer´s needs.
We make beach seine nets with an extended cod end.
Any other adjustments according to the customer´s needs also possible.
Standard beach seine nets
- used for sampling all fish sizes and ages greater than 10 cm in length
Material composition
- polyamide knotless net
- mesh size 6, 10, 15, 20, 25 and 30 mm
- thread thickness 0.5 – 1.4 mm (210/6 – 210/28)
- see table for recommended lengths, heights and design
- nets longer than 30 m have a marked center
- nets longer than 60 m are marked in thirds
- colored floats marks the position
- beach seine nets have lead lines fitted to their size (80 – 240 g/m)
For the beach seine net to be most effective, it is necessary to shrink the net edge to at least 2/3 from initial height
Instructions for use
- Correctly choosing a beach seine net
- Correctly using a beach seine net
Beach seine net designs
Heavy design
Light design
For the beach seine net to be most effective, it is necessary to shrink the net edge to at least 2/3 from initial height
One-depth beach seine net
- uniform depth throughout its all length
Usage
- universal shape for all types of hauls
- suitable for all water bodies with structured-free gently-sloped banks
- disadvantage may be increased weight in case of large nets = larger effort needed during haul
- disadvantage of small nets may be fish escaping during haul techniques such as water – water and shore - water
Effective net endings:
Less effective ending for longer nets and haul technique water - water:
Light design – one-depth beach seine net:
| Mesh size in (mm) | Thread thickness | Net height (m) | Recommended length (m) |
|---|---|---|---|
| 6 | 210/6 | 2, 3, 4 | 10 - x m |
| 10 | 210/18 | 2, 3, 4 | 10 - x m |
| 15, 20, 25, 30 | 210/27 | 2, 3, 4 | 10 - x m |
Heavy design – one-depth beach seine net:
| Mesh size in (mm) | Thread thickness | Net height (m) | Recommended length (m) |
|---|---|---|---|
| 6 | 210/6 | 2, 3, 4 | 10 - x m |
| 10 | 210/18 | 2, 3, 4 | 10 - x m |
| 15 | 210/27 | 2, 3, 4 | 10 - x m |
| 20,25 | 210/27 | 2, 3, 4, 6 - x | 10 - x m |
| 30 | 210/27 | 2, 3, 4, 6 - x | 10 - x m |
Two-depth beach seine nets
- one half times deeper in center of the net
Usage
- useful shape for all kinds of hauls
- haul needs to be symmetric to the center
- useful for all small water bodies
- the advantage is low weight
- the advantage is high efficiency – minimal escaping fish
Effective net ending:
Less effective ending for longer nets and haul technique water - water:
Two-depth beach seine net – light design:
| Mesh size in (mm) | Thread thickness | Core net height m | Lengths of different net sections in m | Total length in m | ||||
|---|---|---|---|---|---|---|---|---|
| 10 / 15 / 20 / 25 | 210/14, 27 | 1,5 | 3 | 1,5 | 2,5 | 3 | 2,5 | 8 |
| 1,5 | 3 | 1,5 | ||||||
| 1,5 | 3 | 1,5 | ||||||
| 10 / 15 / 20 / 25 | 210/14, 27 | 1,5 | 3 | 1,5 | 3 | 4 | 3 | 10 |
| 2 | 4 | 2 | ||||||
| 2,5 | 5 | 2,5 | ||||||
| 10 / 15 / 20 / 25 | 210/14, 27 | 1,5 | 3 | 1,5 | 4 | 4 | 4 | 12 |
| 2 | 4 | 2 | ||||||
| 2,5 | 5 | 2,5 | ||||||
| 10 / 15 / 20 / 25 | 210/14, 27 | 2 | 4 | 2 | 5 | 6 | 5 | 16 |
| 2,5 | 5 | 2,5 | ||||||
| 3 | 6 | 3 | ||||||
| 10 / 15 / 20 / 25 | 210/14, 27 | 2 | 4 | 2 | 7 | 6 | 7 | 20 |
| 2,5 | 5 | 2,5 | ||||||
| 3 | 6 | 3 | ||||||
Three-depth beach seine nets – heavy design
- depth of the net sections have a ratio of 1:2:4
Three-depth beach seine nets have three increasing depths and are one and a half times deeper in the central part of the net.
Usage
- useful shape for all kinds of hauls
- haul has to be symmetric to the center
- useful net for all large water bodies
- the advantage
- low weight – possibility of using larger net
- high efficiency – minimal escaping fish
Effective universal net endings:
Inappropriate endings – slings, slings with light pole:
Three-depth beach seine net – heavy design:
| Mesh size in mm | Thread thickness | Core height in m | Lengths of different net sections in m | Total length in m | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 /30 | 210 / 27 | 2 | 4 | 6 | 4 | 2 | 10 | 10 | 20 | 10 | 10 | 60 |
| 3 | 6 | 12 | 6 | 3 | ||||||||
| 4 | 8 | 16 | 8 | 4 | ||||||||
| 25 /30 | 210 / 27 | 2 | 4 | 6 | 4 | 2 | 10 | 20 | 30 | 20 | 10 | 90 |
| 3 | 6 | 12 | 6 | 3 | ||||||||
| 4 | 8 | 16 | 8 | 4 | ||||||||
| 25 /30 | 210 / 27 | 2 | 4 | 6 | 4 | 2 | 20 | 20 | 40 | 20 | 20 | 120 |
| 3 | 6 | 12 | 6 | 3 | ||||||||
| 4 | 8 | 16 | 8 | 4 | ||||||||
| 25 /30 | 210 / 27 | 2 | 4 | 6 | 4 | 2 | 25 | 30 | 50 | 30 | 25 | 160 |
| 3 | 6 | 12 | 6 | 3 | ||||||||
| 4 | 8 | 16 | 8 | 4 | ||||||||
We make beach seine nets according to each customer´s needs.
We make beach seine nets with an extended cod end.
Any other adjustments according to the customer´s needs also possible.
Beach seine net division according to their shape and structure
Beach seine net division according to their design
Beach seine net division according to its ending
Principles for successful beach seine net usage
Designs and sizes of produced beach seine nets
Beach seine net fishing in a commercial pond
Instructions:
- clear the net out of debris before fishing and check the netting for holes
- fold the net on the boat with floating line on one side, lead line on the other side, with the net core int he middle of the boat
- fold both lines at once on the boat - net casts itself from a moving boat run by rowing or engine
- after casting, a haul is performed by pulling floating and lead lines towards the shore
- haul has to be continuous without interruptions
- fish gather in the deepest part of the net, in the core
- deeper core represents an advantage, as it is in three-depth beach seine net - after the haul the net is fold and fish are grouped to one place
- fish catch is sorted and lifted on a special place
