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Mini-ROVNav 6+

Mini-sized LBL transceiver

Engineered for: ROV

Mini-ROVNav 6+ is a 6G ranging and telemetry Long BaseLine (LBL) ROV transceiver specifically designed for installation on ROVs and USVs where payload space is tight.

At a glance

Use it with Fusion 2

Perfect when ROV space is limited

USBL mode for emergency relocation

Lightweight and easy to install

Modem mode for data recovery from AMTs and Fetch instruments

Mini in size, big in performance

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Mini-ROVNav 6+ is designed to be significantly lighter and smaller than our standard ROVNav 6+ instrument, whilst providing full 6G LBL capabilities.

This makes it particularly suitable for Inspection-class ROVs as well now uncrewed surface vessels (USVs) which can be configured to undertake routine LBL operations over-the-horizon from your survey vessel.

Its full support of  Wideband 2 signal processing techniques offers long range and robust acoustic performance in challenging conditions such as on noisy vehicles or in multipath environments.

Mini-ROVNav 6+ is also a fully compatible USBL responder or transponder compatible with Sonardyne Wideband 1 and 2 USBL systems and HPR 400. 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 using a vessel equipped with a USBL system.

The integrated omni-directional MF transducer has a hemispherical beam pattern which is ideal for acoustics to an array and to a vessel alike.

Mini-ROVNav 6+ is 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. Data rates of between 100 to 9,000 bps user data rates can be supported depending on the environment.


Feature Type 8240
Depth Rating 3,000 m
Operating Frequency MF (20–34 kHz)
Transducer Beam Shape Omni-directional
Transmit Source Level (dB re 1 µPa @ 1 m) 181–187 dB (2 levels)
Tone Equivalent Energy (TEE) 187–193 dB
Receiver Sensitivity (dB re 1 µPa) 90–120 dB
Range Precision Better than 15 mm
Operating Voltage 24 or 48 V dc (±10%)
Serial Communications Primary port: RS232 (9,600 – 115,200 baud)
Responder Input 4 V to 24 V, >0.5 ms duration
Release Output 12 V (250 mA rated)
Battery Life (Listening) Li-ion >7 days
External Power Active (Listening) <2 W
Battery Charging <6 W
Peak (During Transmission) <50 W
Mechanical Construction Hard anodised aluminium alloy and stainless steel connectors
Serial Communications Bulkhead Connector MCBH8M
Dimensions (Length x Diameter) 501 x 93 mm
Weight in Air/Water 5.1/ 2.2 kg
Operating Temperature Range -5C to 40°C
Storage Temperature Range -20 to 55°C
Sensors Type 8240
Temperature (±0.25°C) Standard
Strain Gauge Pressure Sensor (±0.25% FS) Standard

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Mini in size, big in performance