Trawl control system for 3 fishing lines from small to large vessels. Constant tension and wire length measurement is monitored and displayed in the wheelhouse. When the tension builds up, alarms are sounded so the captain can act. Automatic safety measurement can be implemented to protect both crew and vessel.

Key benefits

  • Maximum opening of both nets.
  • Reduces costs of repairing gear.
  • Length and tension measurement of port middle and starboard wire.
  • Different length and tension alarms
  • For electric & hydraulic winches, including monoblock winches
  • Special short-turn programs
  • Wire-release control in case of overload.
  • Classic cost-effective solution / winch control
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Optimum fishing is a combination of many things. Once you have chosen the fishing ground and gear, it is all about having the net in the water with a maximum opening and speed.

Different fishing gear requires both different lengths and tensions, which depend on the type of trawl doors and the type of weight on the central fishing line. The MARELEC 3 will show you exactly what is needed to maintain an optimum catch.

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Fishing protection

  • Important reduction of trawl damage, time-saving and lower repair costs
  • For a fastener, a warp-overload is anticipated through automatic shooting of the wires
  • Propeller-pitch reduction if a fastener persists
  • The effect of fasteners is reduced drastically, especially on difficult grounds

Maximum net opening

  • Maximum catch obtained under all working conditions through equal tension control in both wires and consequent length difference;
  • Applications:
    • With transverse winds and currents
    • On inclined sea bottoms
    • Under adverse weather conditions


  • Time-saving through synchronized pay-out and haul-in of the warps towards pre-set lengths at optimal speed;
  • Labor saving: no more remarking the warps and mark counting

Marelec trawl control systems

Since its establishment in 1983, MARELEC has focused on the development of unparalleled electronic equipment for better fishing performance. These products have been developed in close co-operation with our customers. MARELEC offers a full range of automatic trawling systems, wire length and tension measurement systems.

Exclusive monitoring of the behavior of fishing gear

Easy to read, easy to see what you did, easy to see what you are doing, or not doing! Lengths, time, loads, alarms… With MARELEC you know!


Based on its long experience in fishing technology, MARELEC designs and manufactures different types of measuring rollers with integrated length and tension sensors. The load sensors are designed by MARELEC and made to stand the worst marine conditions. Winch-mounted solutions complement the range. All systems can be controlled remotely and serviced from a distance.

Electronic and hydraulic winches can be controlled

Subject to modifications for technical progress
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