Engineered for: ROV, Seabed
Marker 6 is a low-cost, Ranger 2 USBL compatible acoustic positioning transponder designed for simple target marking applications in water depths up to 4,000 m.
At a glance
Mark and relocate underwater equipment, vehicles and points of interest
Compatible with all Ranger 2 USBL systems
Depth rated up to 7,000 m
More than 30 months listening life (lithium battery option)
Over 200 unique acoustic addresses
Deploy, mark and locate your targets
Want to know more?
Marker 6 is a low cost acoustic positioning transponder for when a compact design and deep operating capability are important operational factors. It enables targets such as underwater structures, vehicles or instrumentation packages to be marked, located or tracked using a Ranger 2 USBL system; micro, mini or standard.
The instrument incorporates Near Field Communications (NFC) allowing for fast setup. Its acoustic address can be selected from over 200 unique identities meaning that multiple Marker 6s can be deployed in close proximity to each other without causing interference.
On the backdeck, the address can be quickly programmed into each transponder using a suitable NFC enabled handset (including an NFC enabled Android™ handset with the Sonardyne NFC App) or a dedicated HF Radio Frequency Identification (RFID) reader.
Sonardyne Wideband signal encoding reduces the interference both on and by adjacent Sonardyne and other acoustic positioning systems.
The NFC link provides the ability to enter Marker 6 into a storage mode when not in use, thereby significantly increasing the overall battery endurance.
Marker 6 case studies
Micro. For when good is good enough
Micro-Ranger 2 is our smallest ever Ultra-Short BaseLine (USBL) system, designed for first-time users to unpack, install and start tracking. It’s providing an easy to deploy yet important tool for monitoring coastal habitats in Australia, as Fathom Pacific’s Director and Principal Consultant Dr Adrian Flynn sets out for us.
Client: Fathom Pacific
Mini-Ranger 2. Recovering lost history
Mini-Ranger 2 offers many of the features of our top performing system, but is smaller, making it ideal for temporary use on chartered workboats. Recently, it’s been in service with James Fisher Marine Services who are helping to raise a piece of otherwise lost World War II aviation history.
Client: James Fisher Marine Services
|Feature||Type 8326-4311||Type 8326-7511|
|Depth Rating||4,000 m||7,000 m|
|Operating Frequency||MF (19–34 kHz)||MF (19–34 kHz)|
|Transducer Beam Shape||Omni-directional ±130º||Omni-directional ±130º|
|Transmit Source Level (re 1 µPa @1 m)||187 dB||187 dB|
|Battery Life (Continuously Listening)||Alkaline||>9.5 months||>9.5 months|
|Alkaline||>30 months||>30 months|
|Storage Mode (Battery Disconnect via NFC)||Alkaline||5 years (battery self-discharge limited)||5 years (battery self-discharge limited)|
|Lithium||>10 years (battery self-discharge limited)||>10 years (battery self-discharge limited)|
|Operating Temperature Range||-5 to 40°C||-5 to 40°C|
|Storage Temperature Range||-20 to 55°C||-20 to 55°C|
|Mechanical Construction||Outer Housing||Polypropylene||Polypropylene|
|Inner Housing||Duplex stainless steel||Titanium grade 5|
|Dimensions (Length x Diameter)||383.0 x 63.0 mm (15.1 x 2.5”)||383.0 x 63.0 mm (15.1 x 2.5”)|
|Weight in Air/Water||2.0/1.3 kg||1.5/0.7 kg|