Wärtsilä ELAC SBE 1

The Sonar Beacon Equipment Wärtsilä ELAC SBE 1 is an acoustical beacon system for submarines transmitting acoustical signals in case of emergency.

Rescue ships or other vessels equipped with either passive sonar, underwater telephone or other hydrophones are able to perceive these emergency signals and locate the distressed submarine.

Wärtsilä ELAC SBE 1 is available as single- or dual-frequency system, which can be equipped with a wide variety of transducers.

    Key Features
    • Compact and rugged construction
    • Operation independent of ship’s main power supply
    • BITE: test of battery and electronic circuits
    • Long operating life
    • Main control unit in watertight and pressure proof case – even with the submarine’s interior flooded, the equipment remains operational
    Technical Data

    Output Data

    Source level 180 dB ± 2 dB rel 1 mPa/1 m on transducer axis
    Operating frequency 3.5 / 5 / 9 / 12 / 35 / 37.5 kHz standard
    (others upon request)
    Pulse length 50 ms (can vary between 10, 50 and 100 ms depending on the system configuration)
    Pulse repetition rates 10 s (can vary between 1.5 and 10 s depending on the system configuration)
    Operating life 800 - 4,000 h (depending on the system configuration)
    Non-operating battery life Battery self-discharge less than 3% per year




    Dimensions and Weights

    Dimensions and Weights of Main Control Unit STG 94

    Height 320 mm
    Width 230 mm
    Depth 200 mm
    Weight 30 kg
    Max. operating pressure 50 bar (housing)
    50 bar (electronics)


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