Trawl door with lift adjusting means

A trawl door with lift adjusting means adapted to being remotely controlled, said trawl door comprising:

• an upper frame defining a top surface of the trawl door,
• a lower frame defining a bottom surface of the trawl door, and
• an intermediate frame positioned between said upper frame and said lower frame,
• said trawl door further comprising:
• a first number of longitudinal upper panels of hydrofoil construction arranged and extending between said upper frame and said intermediate frame, and
• a second number of longitudinal lower panels of hydrofoil construction arranged and extending between said intermediate frame and said lower frame,
• said trawl door having a cambered cross section and comprising a leading edge and a trailing edge, an inner trawl door side surface for facing a trawl mouth, and an opposite outer trawl door side surface,
• said upper frame, said intermediate frame and said first number of upper panels defining an upper trawl door section of said trawl door, and
• said intermediate frame, said lower frame and said second number of lower panels defining a lower trawl door section of said trawl door,
• said first and second number of panels each including an inner panel, which defines at least part of said inner trawl door side surface, and an outer panel, which defines at least part of said outer trawl door side surface, wherein
• said outer panels having an opening and a moveable plate member being connected to a driving unit and adapted to be controlled remotely when the trawl door is being towed through the water, such that said moveable member may be arranged in a first position closing said opening, and in a second position establishing an adjustable opening through said outer panel side surfaces, hereby adjusting a flow of water through said outer panels.