Multi Level Door

Multi Level Door MLD, Multi Level Door. The leader of Steerable Trawl Doors. Bringing trawl doors to a new era! This development heralds a new era in trawl fishing efficiency.”

Using sensor technology to fine-tune relative angles between trawl doors and the spread of nets during drag and lift operations to optimise catch performance. MLD offers a range of innovative, manually adjustable doors, incorporating a patented flap that replaces the inflexible attachment points for towing wires seen in conventional solutions, which offer no scope to control the angles or position

s of trawl doors in the water. The user can optimise the relative angle between the trawl door and the spread of the net in different sea conditions to boost catch volumes; manual control of trawl doors can already boost net catch areas by up to 40%. In a new digital departure, performance will be enhanced further as part the new MLD Trawl Steering SystemTM, designed to enable MLD’s manually adjustable doors to be upgraded and optimised for maximum productivity. The system allows trawl steering to be controlled more accurately and safely from the bridge, using sensor technology to optimise lift-to-drag ratios and ease handling, and offer much improved control of depth, distance from the seabed and spread of nets between doors. Designed in close collaboration with senior skippers from the trawling industry, the MLD Trawl Steering System promises to raise fish catch volumes, with returns on investment measured in months, according to Thyge Baungaard, Manager Mechanical Engineering.

“Trawl doors are used to ensure that fishing nets are maintained at the right depth, angle and spread aft of vessels,” explains Mr Baungaard. “Traditional systems require trawler skippers to decide on a range of variables depending on sea conditions, including trawl depth, angle, the spread of net between the two trawl doors, and vessel speed. The skipper can use sonar technology and the trawl eye to monitor possible fish volumes within the area of the net but there is very little chance that all parameters will be optimised at any one time. The result is that the catch can never be maximised.”

“The Trawl Steering System can be installed as part of an automated system, but the really exciting thing is that it can be retrofitted to manual systems as trawlers are scheduled for maintenance,” says Baungaard. “Skippers will then benefit from full digital control of future trawling operations, raise efficiency, reduce fuel consumption, maximise profitability and enhance safe trawling operations.

“Our digital system will provide sensors in key locations including the trawl doors, the controllable flaps and the fishing net itself. This will mean that skippers can automatically optimise depth, angle, and spread directly from the bridge. For the first time, the angle and inclination of the trawl will not depend solely on prevailing conditions, but primarily on the experience and control of bridge personnel.

MLD udstiller sammen med Vikmar på Atlantic Fair 19-21. maj på stand . Kom forbi til en snak og hør det seneste om MLDs...
19/05/2026

MLD udstiller sammen med Vikmar på Atlantic Fair 19-21. maj på stand . Kom forbi til en snak og hør det seneste om MLDs Spreadadjusters.

We’re excited to announce that MLD will be exhibiting at the Skipper Expo Aberdeen on the Woodsons stand — Stand D01.Co...
07/05/2026

We’re excited to announce that MLD will be exhibiting at the Skipper Expo Aberdeen on the Woodsons stand — Stand D01.

Come by for a chat and get the latest updates on steerable trawl doors and innovative solutions for modern fishing operations.

We look forward to seeing you in Aberdeen!

MLD udstiller på HavExpo i Bergen tirsdag til torsdag. Kom forbi standen A601 til en snak om trawldøre og MLDs nye sprea...
05/05/2026

MLD udstiller på HavExpo i Bergen tirsdag til torsdag. Kom forbi standen A601 til en snak om trawldøre og MLDs nye spreadadjuster - gamechanger for trawldøre.

MLD SpreadAdjusters prove it again onboard Fagraberg.Earlier today we received the message below from skipper on Fagrabe...
30/04/2026

MLD SpreadAdjusters prove it again onboard Fagraberg.

Earlier today we received the message below from skipper on Fagraberg Eydun Gullaksen:

“Hey, SpreadAdjusters works really well and I am using it a lot. I am using 240 m bridels and this is challenging, however with MLD SpreadAdjusters I am in control. It’s fantastic how well the doors are working”

MLD is proud to continue the journey onboard the new Fagraberg.

MLD SpreadAdjuster – MAKES THE DIFFERENCEMLD SpreadAdjuster in action for the first time aboard the Faroese vessel Trónd...
09/04/2026

MLD SpreadAdjuster – MAKES THE DIFFERENCE

MLD SpreadAdjuster in action for the first time aboard the Faroese vessel Tróndur í Gøtu.

The skipper and crew are highly satisfied with the new SpreadAdjuster function on MLD trawl doors, allowing for a significant reduction in trawl spread when needed.

Skipper Finnbjørn Mikkelsen says:
“While fishing for blue whiting last night, we had to switch to a smaller trawl - and the MLD SpreadAdjuster made all the difference. Without it, the trawl opening would have been far too narrow. Instead, we achieved a perfect opening, and in fact, we caught more fish than the vessels around us”.

The pictures show two screen shots from the testing during the first tow. As can be seen the spread can be adjusted significantly. During the testing we could change the distance between the doors from more than 430 meters to well below 350 meters. The system has the ability to reduce the spread even more.

28/03/2026
Nu med SpreadAdjuster på MLD dørene! Vi ønsker jer rigtig godt fiskeri med den nye teknologi.
26/03/2026

Nu med SpreadAdjuster på MLD dørene! Vi ønsker jer rigtig godt fiskeri med den nye teknologi.

23/02/2026

At MLD, we develop the steerable trawl door technology that drives the industry forward.

We are — and have always been — market leaders.

We have more steerable doors in the water than anyone else, and we’ve had them there for years.

With thousands of logged hours and continuous development in close collaboration with our skilled customers, we keep setting the standard.

More experience. More data. Better performance.

11/02/2026

Ocean Rover har brukt MLD dørene sine 1080 tauinger og er godt fornøyd iflg trålbas Gjermund Eikrem👍😀

MLD & American Seafoods – Proven Performance in Alaska’s Operations.Under the demanding fishing conditions off Alaska, M...
10/02/2026

MLD & American Seafoods – Proven Performance in Alaska’s Operations.

Under the demanding fishing conditions off Alaska, MLD’s solution has been successfully implemented since January 2024 across three American Seafoods vessels: Ocean Rover, American Triumph, and Northern Eagle. An additional order has been received for American Dynasty.

The deployment has delivered consistent operational results, including optimized catch efficiency, reduced bycatch, and a reliable and strong structure designed to perform under tough conditions. Feedback from crews across all vessels confirms high satisfaction and dependable performance in daily operations.

To support continuous performance and uptime, MLD provides 24/7 technical support, both online and locally, ensuring fast response and expert assistance whenever required in demanding fisheries.

For operators working under challenging conditions, proven solutions and reliable support make the difference.

Looking to optimize performance in demanding fisheries?

Contact MLD and see how proven solutions make the difference where it matters most.

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Esbjerg
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