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ROVNav 6+

LBL ROV transceiver (6 plus generation)

Engineered for: ROV, Seabed, Structure

ROVNav 6+ (plus) is a Wideband 3 and Wideband 2 ranging LBL and telemetry transceiver specifically designed for installation on Work-class ROVs.

At a glance

High power, long range LBL transceiver for ROVs

Wideband 3-enabled supporting embedded sensor data with ranging data

Optimised for Fusion 2; compatible with Fusion 1

3,000, 5,000 or 7,000 m depth rated options

USBL mode for emergency ROV relocation

Modem mode for harvesting data from Sonardyne logging sensors; Fetch, AMT...

Engineered for Fusion 2 LBL

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ROVNav 6+ uses our new Wideband 3 signal technology, which is key to unlocking the benefits of your Fusion 2 LBL system.

It allows, for the first time, sensor telemetry data (e.g. pressure, depth, temperature) from a seabed or structure deployed Compatt 6+ to be embedded within navigation (ranging) data. This change has a big impact on operations such as structure installation, as breaks in tracking to get sensor reading updates at vital moments, are now a thing of the past.

Its compatibility with Wideband 3 and Wideband 2 telemetry commands, and support of high power Wideband 2 ranging protocols, proven for their accuracy and robustness, means the ROVNav 6+ offers improved range and acoustic performance in challenging conditions such as on noisy vehicles or in multipath environments.

ROVNav 6+ is also a fully functional USBL responder or transponder, compatible with Wideband 2 USBL systems and HPR400. The internal li-ion rechargeable battery pack also enables emergency transponder mode, so if the umbilical and therefore power is cut to the ROV it can still be located by USBL.

The omni-directional remote MF transducer makes installation on an ROV easy. ROVNav 6+ is designed to be rugged and relatively lightweight and utilises robust underwater connectors. ROVNav 6+ supports a range of internal sensors including: strain gauge pressure, PRT temperature and MEMS based inclinometer.

ROVNav 6+ is also fully compatible with our modem and logging equipment such as AMT and Fetch products, allowing it to be used to retrieve data or configure logging regimes. It supports all of our Wideband 2 and Wideband 3 spread spectrum acoustic communication; 100 to 9,000 bps data rates can be selected depending on the environment.

Sensor options include a Digiquartz pressure sensor, precision inclinometer and altimeter interface. This provides a fully featured ROV manipulator deployable tool/sensor pack for a range of different applications including metrology, bathy survey and structure deployment operations, without the requirement for any additional interfacing on the ROV.


Feature 8340-3161 8340-5261 8340-7261
Depth Rating 3,000 m 5,000 m 7,000 m
Operating Frequency MF (20–34 kHz) MF (20–34 kHz) MF (20–34 kHz)
Beam Shape Omni-directional Omni-directional Omni-directional
Transmit Source Level (dB re 1 µPa @ 1 m) 187–196 dB (4 levels) 187–196 dB (4 levels) 187–196 dB (4 levels)
Range Precision Better than 15 mm Better than 15 mm Better than 15 mm
Serial Communications RS232 or RS485 (half-duplex) RS232 or RS485 (half-duplex) RS232 or RS485 (half-duplex)
Battery Life Li-ion (Listening) 3 days 3 days 3 days
Operating Voltage 24 or 48 V dc (±10%) 24 or 48 V dc (±10%) 24 or 48 V dc (±10%)
Serial Communications Connector Subconn (8-way female) Subconn (8-way female) Subconn (8-way female)
Remote Transducer Connector Burton (3-way male) Burton (3-way male) Burton (3-way male)
Housing Mechanical Construction Hard anodised aluminium 6082 Hard anodised aluminium 6082 Hard anodised aluminium 6082
Remote Transducer Mechanical Construction Stainless steel 316 Stainless steel 316 Stainless steel 316
Dimensions (Maximum) (Length x Diameter) 768 x 200 mm 768 x 200 mm 768 x 200 mm
Weight in Air/Water 14.3/5.3 kg 14.7/5.7 kg 15.5/6.0 kg

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Engineered for Fusion 2 LBL