The fisherman puts his fishing gear into the water, quite normally, as if using his usual buoys… but these are replaced by our DLS buoys.

At the launch, the fisherman considers the depth and reduces his length, to keep his DLS buoys at about 15-20m below the surface.

Also, during the installation of his fishing gear, the fisherman notes the “Way Points”, to identify the location of his DLS buoys. His DLS case saves the GPS coordinates of each of his DLS buoys.

Returning to the fishing site, fisherman transmits the DLS acoustic code for the buoy he wants to rise to the surface to retrieve his gear.

Once the DLS buoy back to the surface, the fisherman gets his fishing gear, as usual.


With a range of about 500m., the DLS buoy receives the acoustic signal and triggers the mechanism to rise to the surface


Like any acoustic system, triggering distances are nevertheless related to the state and the temperature of the water (minimum 200m. / maximum 1100m.)


The DLS buoy with all its elements (keel and mast) is able to hold a high stability in deep water or surface, until 5 knots currents, and winds until 100 km/h (instructions from manufacturer).


Our DLS buoys have “Safety devices” :

- A LED lights in case of waterway (water / moisture inside of the buoy). In this case of internal water, the buoy is triggered automatically, and rises to the surface.

- Another LED lights when the battery is too low. It warns that the battery is too low, and therefore it is useless to put the DLS buoy in the water. Likewise, when the buoy is immersed, the processor evaluates the battery. Once it reaches the critical triggering threshold, the DLS buoy rises up to surface.


Our DLS system will have a very important impact on the serious problem of abandoned, lost or otherwise discarded fishing gear (ALDFG).

Various United Nations General Assembly resolutions now provide a mandate for, and indeed require, action to reduce ALDFG and marine debris in general. Consequently, the United Nations Environment Program (UNEP) and the Food and Agriculture Organization of the United Nations (FAO) entered into an agreement to carry out a study in relation to ALDFG, in order to raise awareness of the extent of the problem and to recommend action to mitigate the problem of ALDFG by flag states, regional fisheries management bodies and organizations, and international organizations, such as UNEP, the International Maritime Organization (IMO) and FAO.

The impacts of the ALDFG are considered and include :
- continued catching of target and non-target species (such as turtles, seabirds and marine mammals) ;
- alterations to the benthic environment ;
- navigational hazards ;
- beach pollution by debris and garbage ;
- introduction of synthetic material into the marine food ;
- introduction of alien species transported by ALDFG ;
- and various costs related to clean-up operations and impacts on business activities.

In general, gillnets and pots / traps are most likely to “ghost fish” while other gear, such as trawls and longlines, are more likely to cause entanglement of marine organisms, including protected species, and habitat damage.

Our DLS will help to protect fishing gear and thereby reduce ALDFG.


This DLS system has all the assets to attract boaters and commercial fishermen :

1°) DLS demonstrates
- Great innovation,
- Respect of the Environment,
- Simple using and practical, to remain faithful to its customary,
- Good value cheap.

2°) DLS will help reduce the ADLFG (abandoned, lost or otherwise discarded fishing gear).