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
Want to know more?
Overview
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.
Mini-ROVNav 6+ case studies
Energy
Rewriting the subsea survey rules
Fusion 2 is not just simplifying offshore survey operations, it’s changing how people operate – for the better. Mike Clark, Global Survey Manager, i-Tech 7, told Baseline about their route to demonstrating reductions in offshore vessel schedules for Subsea 7’s deepwater field development projects using the real-time SLAM capability in Fusion 2.
Client: i-Tech 7
Energy
Using a hammer to crack a nut? Try using a USV instead
USVs are no longer a niche tool used within defence, they’re now regularly patrolling our oceans, gathering hydrographic and oceanographic data. Is it time that they were also used to support smarter, cleaner and more cost-effective offshore construction operations? Ed Moller, Head of Energy, thinks so.
Resources
| 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 |
