Flexible solution for your type of fishing
PURSE SEINING
DANISH SEINING
BOTTOM TRAWLING
PELAGIC TRAWLING
• Depth sensor
• Bottom contact sensor
• Temperature sensor
• Depth sensor
• Bottom contact sensor
• Depth sensor
• Bottom contact sensor
• Rip sensor
• Catch sensor
• Depth sensor
• Bottom contact sensor
• Temperature sensor
• Rip sensor
• Catch sensor
• The depth sensor tells you the
right moment to start pursing,
helps you to purse at the right
speed, helps you avoid lifting
the net above the fish, measures
the sink rate and detects if the
net has stopped sinking.
• The bottom sensor prevents
you from hitting the bottom
and tearing the net, and helps
you catch fish close to the bottom.
• The temperature sensor reads
the water temperature and
detects when a thermo-cline
is passed.
• Watch the net sink towards
the bottom with the depth
sensor.
• Signals the right moment
to start hauling by watching
the depth and bottom sensor.
• Avoid lifting the net above
the bottom with a bottom
contact sensor.
• By using two depth sensors
you can accurately measure
the net opening.
• Watch the net sink towards
the bottom and adjust vessel
speed for maximum sink speed
using the depth sensor.
• By using two depth sensors,
the trawl opening will be accu-
rately measured.
• The bottom sensor immediatly
alarms when the footrope lifts off
the bottom, letting the fish escape
under the footrope.
• The catch sensor alarms and
indicates when the trawl is
filled and ready to be hauled.
• The temperature sensor
prevents fishing in the wrong
temperature layer.
• The rip sensor tells you if
the trawl is damaged allowing
fish to escape.
• Watch the net sink using the
depth sensor and adjust the trawl
depth to where the fish are.
• By using two depth sensors,
the trawl opening will be accu-
rately measured.
• The bottom sensor immediatly
alarms when the footrope is
too close to the bottom and helps
you to avoid tearing the net.
• The catch sensor alarms when
the trawl is filled and ready to
be hauled .
• The temperature sensor
prevents fishing in the wrong
temperature layer.
• The rip sensor tells you if
the trawl is damaged allowing
fish to escape.
The bottom contact sensor is
mounted on the ground line
of a purse seine. By adjusting
the length of the rope to the
weight you can set when the
bottom contact sensor should
give an alarm.
A pelagic trawl close to the
bottom. The length of the
sense chain determines how
close to the bottom the footrope
is allowed before you get a
bottom contact alarm.
A typical mounting of a bottom contact sensor on a trawl. The length
of the sense chain determines how far off the bottom the footrope should
be allowed before the alarm sounds.
The quick update rate gives an
immediate alarm when the net lifts off the bottom.
ROCKHOPPER
SENSE CHAIN
GROUND WEIGHT
STAY
Installed on the footrope on the bottom of a trawl, the bottom sensor will
immediatly indicate when the footrope is lifting off the bottom, letting the fish
gathered in the trawl opening escape under the trawl net. For a purse seine net
or a pelagic trawl, the bottom sensor will give an alarm when the bottom of
the net is within a preset distance from the bottom. The bottom sensor has an
easy to understand operation and is easy to rig on the net.
Note:
Patent pending on bottom contact sensor system
