EdgeTech 5112 Ropeless Fishing System

The EdgeTech Ropeless Fishing System with embedded acoustic release technology was developed to eliminate vertical lines connecting a surface buoy to bottom fishing gear. The system was designed from the ground up with the input of fishers with the intent of alleviating possible whale entanglement and other negative effects of seafloor-to-surface fishing and trap lines.

Edgetech

West Wareham, US

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Description

The EdgeTech Ropeless Fishing System was designed for the rough and tumble handling of shallow water and small boat operations. Expanding the extensive line of reliable acoustic release products and utilizing the same proven Push-off Release Transponder (PORT) technology, the EdgeTech system is perfectly suited for those applications that require a robust, yet shallow water, acoustic release enabled ropeless fishing package. The unit can be deployed in water depths down to 500 meters and handle a load of 500 pounds while remaining underwater for up to one year (two years on lithium batteries). With its unique nickel aluminium bronze alloy construction, it can withstand even the harshest shallow water environments providing corrosion resistance like none other. The system, when communicating with a fishing-vessel-installed acoustic deck box, will provide shipboard operators information such as position, battery life and tilt status, release confirmation and temperature. The system will tolerate harsh handling on the vessel and unfavourable conditions under the water. The acoustic coding structure allows for over 1 billion unique codes making it the most secure acoustic release ever produced. The EdgeTech Ropeless Fishing System will enable fishing operations in areas and conditions probative without such technology.

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Specifications

Physical Properties: Length [cm]

35

Diameter [cm]

12

Weight in air [kg]

10

Housing material

Nickel-Aluminum-Bronze Alloy

Weight in water [kg]

8.6

Operating properties: Depth rating {m}

500

Transmit frequency min. [Hz]

175000

Receive frequency [Hz]

18000

Transmit Source Level (dB re 1 μPa @ 1 m)

178

Transmit frequency max. [Hz]

17500

All transmit frequencies [Hz]

17500

Receive Sensitivity (dB re 1μPa)

-78

Transducer Beamshape

omni

Safe Working Load (4:1) [Kg]

225

General: Year of latest version

2019

Main applications

Ropeless Fishing

Field of Use

Fishing, Lobstering, Research

Year of initial introduction

2019