Fishing buoys


KANNAD propose solutions for fishing assistance in link with productivity improvement but also safeguard of the halieutic resources.

For ten years the various positioning beacons developed by the department have put the KANNAD as the world leader on the market of the tracking of drifting objects used for tuna fishing by the oceanic seineurs. This technique of fishing known as fish under FAD (Fish aggregating device) represents one of the main tuna resources on the three oceans.
The tunas, by natural phenomenon, are grouped regularly under zones of shade. Fishing under FAD consists in letting drift floating wrecks and coming there regularly to capture tuna. By tying the buoys with the rafts, the fishermen can follow regularly their positions thanks to dedicated software and move quickly towards the wreck to fish the tuna. Thus the positioning beacons allow tuna boat ship-owners to improve their productivity.

Two models of “fishing buoys” currently exist: the HF GPS buoy (radio transmission of GPS position) and the D+ buoy (satellite transmission of GPS position). During these ten last years the partnerships developed throughout the world to distribute this line of product has permitted the KANNAD to acquire an international notoriety in the tuna fishing market and a knowledge of the market of fishing in general.

KANNAD fields of competences enable it to propose solutions for the localization of fishing devices, transmission of fishing assistance data, detection and identification of fish and this as well for deep- sea fishing as local fishing while favouring those falling under logic of durable development and safeguard of the halieutics resources.

These fields are as follows:

- Systems of data transmissions (HF, Inmarsat D+, Inmarsat C, Orbcom, Irridium…)
- Autonomous systems (energy management)
- Signal and data processing
- Embarked systems (in marine environment)
- System of positioning (GPS)
- Parameters measure (temperature, acoustic recorder)
- HMI (user interface)

Apart from the fishing buoys and various evolutions in progress Martec Group already propose solutions for long line fishing (buoys to follow the drift of the lines) and will develop soon other devices dedicated to this market.

 


SC HF GPS - HF fish marking radio buoy


The SC-HF GPS marking buoy is specifically designed to mark flotsam as used for tuna fishing. The buoy is moored to flotsam released at sea to mark shoals. The SC-HF GPS buoy is a sturdy half sphere made of moulded plastic (400 mm diameter).

The standard model is equipped with an antenna 2,5 m high, an HF transmitter, a Global Positioning System, a flashlight and a temperature sensor. Buoy characteristics make it difficult to spot.

Advantages:


- Discreet
- Attractive price
- No additional operation cost
- Long range (more than 800nM)

New specifications:

- Blue external color and new shape to reduce sight detection
- Possibility of activating flash light
- Shorter message to enforce discretion
- Shorter antenna (<1,50 meters) to reduce radar detection.



INMARSAT WF-BD+ - Fishing marking buoy


The fish marking buoy WF-BD+ has been specifically designed to mark flotsam used for tuna fishing. This buoy is moored to a flotsam released at sea to mark shoals. The WF-BD+ buoy is a sturdy half-sphere of 400 mm diameter, made of moulded plastic. It is equipped with an integrated antenna, an INMARSAT D+ transceiver, a GPS, a temperature sensor and a flashlight.

Advantages:

DISCRETION

Its characteristics (blue color, levelled shape) make it difficult to see and to locate by radar.

Considering the type of signal encryption, data decoding by "pirate receivers" or by the server is impossible and this makes the system all the more secure and confidential.

COVERAGE AREA

The important coverage area allows to receive a buoy whatever its distance from the boat.

AUTOMATIC TRANSMISSSION LIMITATION

After a limited number of transmission (4, 8 or 12) in 8 or 24 times a day mode, the buoy mode is automatically set back in it common mode: 1 time a day.

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