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Rounded Cornders
Key Features
Incorporates Sonardyne's 6G® Technology
Incorporates Sonardyne's Wideband 2® signal Technology
Wideband V2 and V1 signals
Choice of 1,000m or 4,000m depth rating
Choice of Omni-Directional or Directional beam-shape with class leading acoustic power output
Channel selection via serial data port by PC
Transponder or Responder operating modes
Depth sensor for improved USBL positioning performance
Long-life NiMH battery
Compact and rugged design
Windows based software for test and setup
External On/Off switch for ease of use and storage
Wideband Sub-Mini 6

WSM is has now been replaced by WSM 6+. Although the WSM6 transponder is no longer available to purchase, Sonardyne still offers full after sales technical support including spares, repairs and servicing for this product.

The compact and rugged design is based on the field proven WSM mechanics and is available in MF Directional and MF Omni-Directional versions. The latest Sonardyne Wideband®2 signal technology has been incorporated, which offers superior ranging accuracy and fast USBL position updates.

In addition to supporting new Sonardyne Wideband®2 signals, WSM6 also supports WBv1, traditional Sonardyne tone, HPR300 and HPR400 channels. The configuration is programmed via dedicated setup software and a serial link. This allows the WSM6 to be configured for use with all of the popular MF frequency acoustic navigation systems. To aid quick setup and ease of use there are WBv1 and WBv2 quickset channels which configures both the interrogate and reply channels.

The Type 8271 WSM6 is equipped with an Omni-directional transducer and is depth rated to 1,000 metres making it suitable for a wide range of general USBL tracking applications.

The Type 8270 WSM6 is a 4,000 metre rated unit and features a high-power directional transducer with an acoustic output comparable to Sonardyne's most powerful full size seabed transponders.

Both types of WSM6 have a depth sensor fitted as standard to aid USBL positioning accuracy and an external On/Off switch for ease of use and storage when not in use.

FeatureType 8271Type 8270
Depth Rating 1,000 Metres 4,000 Metres
Operating Frequency MF (19-36 kHz) MF (19-36 kHz)
Transducer Beamshape Omni-Directional Directional
Transmit Source Level
(dB re 1µPa @ 1m)(26-32kHz)
(External Power)
(Battery – High Power)
(Battery – Low Power)
190 dB
188 dB
185 dB
202 dB
199 dB
196 dB
Tone Equivalent Energy (TEE*) (External Power) 193 dB 205 dB
Receive Sensitivity (dB re 1µPa) High Gain
Low Gain
Power Supply Long-Life Ni MH battery or ext.
24 V via ROV’s umbilical
Long-Life Ni MH battery or ext.
24 V via ROV’s umbilical
Operating Channels All Sonardyne Wideband/Tone
HPR 300 & 400 Channels
All Sonardyne Wideband/Tone
HPR 300 & 400 Channels
Number of Replies (Responder) Unlimited with External Power Unlimited with External Power
Depth Sensor Standard Standard
Maximum Update Period 750 ms 750 ms
Quiescent Life 60 Days 60 Days
Mating Connector Subconn MCIL5F Subconn MCIL5F
Mechanical Construction Aluminium Alloy, Anodised Aluminium Alloy, Anodised
Dimensions (LxDia) 400mm (15.7”) x
75mm (2.95”)
404 mm (15.9”) x
91 mm (3.6”)
Weight in Air 2.7 kg 5.0 kg
Weight in Water 1.4 kg 2.6 kg
Battery Charger 7972-000-04 7972-000-04

*TEE – WBv2 & WBv1 signals are 2x the duration of Sonardyne tone signals, therefore the TEE figure is to give the user an idea of the operational performance when comparing Wideband and Tone systems.

Instrument Firmware
WSM 6 V3.06

Technical Bulletins

WSM 6 Connector Label - No:TB-12-002.pdf The pin numbering diagrams on the WSM 6 label for the 5-way malea and female bulkhead connectors have been reversed. The wiring table is correct, as is the information and illustration in the Product Manual.

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