Gyro Compatt 6+
LBL transponder with integrated gyro
Engineered for: Structure
Gyro Compatt 6+ is our combined LBL transponder and AHRS, supporting every stage of your structure installation project. The instrument provides wireless high update rates of attitude, heading, heave, surge, sway, temperature, pressure, SV and acoustic positioning of any subsea object. Deep water structure installation - made easy.
At a glance
Combined LBL transponder and Lodestar AHRS instrument; rugged, ROV deployable design
Calculates motion and position of any subsea object; use it for structure installation and metrology
Rechargeable internal battery provides more than a day of continuous use
Wideband 3 inside; our latest signal protocols delivering fast, efficient operations
LBL and USBL modes; optimised for Fusion 2 and Ranger 2
Built to support subsea construction
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Why Gyro Compatt 6+ is perfect for your operations
For the first time, sensor telemetry data (e.g. pressure, depth, temperature) is embedded within ranging data so no more waiting for sensor readings at vital moments.
Gyro Compatt 6+ transponders are backwards compatible with your existing Compatt 6 inventories so you can mix and match in the field.
With a battery life of 28 hours, you have a full day to install your structure and recover the unit using ROV. Recharge it and it's ready to go again.
Gyro Compatt 6+ replaces the need to use a separate LBL positioning transponder and subsea gyro to support offshore construction campaigns. Using it, structure position and orientation can be accurately determined during lowering, set-down and as-built surveys, while for metrology, the instrument delivers the measurements required for pipe-end coupling.
By eliminating the cost and complexity associated with separate instruments, connected by vulnerable subsea cables and external battery packs, Gyro Compatt 6+ delivers significant operational benefits, saving vessel time and de-risking complex, deep water construction projects.
This, our third generation Gyro Compatt, shares the same field-proven mechanical design as previous models so there’s no need to adapt your existing survey tooling. It’s small and light enough to be installed by ROV, and a mechanical stab plate enables users to precisely align the unit to structures such as templates and manifolds.
It’s on the inside where Gyro Compatt 6+ differs from previous models. It operates using our exclusive Wideband 3 signal protocols so now, for the first time, sensor telemetry data (e.g. pressure, depth, temperature) can be embedded within navigation (ranging) telemetry data.
Using Gyro Compatt 6+ makes pauses in tracking to get sensor reading updates at vital moments a thing of the past.
Fusion 2 LBL software is the key to unlocking the benefits of Wideband 3. Only operations controlled with Fusion 2 can support Wideband 3 telemetry commands. Gyro Compatt 6+ transponders are backwards compatible with your existing Compatt 6 inventories. However, to achieve its full potential, you’ll need to use exclusively 6+ transponder arrays and Fusion 2.
Compatt 6+ Plus are available to purchase from Sonardyne, or hire from leading offshore equipment rental companies.
Heading accuracy 0.04 to 0.1º Secant latitude
Ranging precision better than 15mm
Rechargeable 28 hr internal battery pack
Simultaneous ranging and sensor data telemetry; requires Fusion 2
Real time diagnostics on range measurements for quality control
Autonomous data logging mode
Acoustic, AHRS and Sensors
MF frequency (19–34 kHz)
Supports Wideband 3 and Wideband 2 telemetry protocols
Integrated Sonardyne Lodestar AHRS, factory aligned
Integrated SV and depth sensors
Dimensions 918 x 248 mm
45/17 kg weight in water/air
Deploy and recover using ROV
External AHRS On/Off switch
Plastic, super duplex stainless steel and anodised aluminium construction. ROHS compliant
What’s in the box: Gyro Compatt 6+, manual
Warranty: 1 year return to Sonardyne service centre
ITAR Controlled: No
UK Export License: required; US Export License: covered under de minimis
Gyro Compatt 6+ case studies
Long ROV excursions, high elevation tracking, noisy waters – not a problem
ROV pipeline inspections in shallow water – with long excursions and high elevation tracking requirements – can pose major challenges for even the best USBL systems. With SPRINT-Nav in the mix, it’s no longer an issue. Tavis Letherby, Survey/ROV Manager at CCC (Underwater Engineering), explains.
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
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.
|Depth Rating||3,000 m|
|Operating Temperature||-5 to +40°C|
|Storage Temperature||-20 to +55°C|
|Operational Shock Rating||22 g, 11 ms half sine|
|External Battery Pack / ROV Supply||24 V (20–50 V)|
|Battery Life||Acoustic Navigation Standby||3 months|
|Lodestar Permanently Powered On||28 hours|
|Acoustic||Compatt 6+||Operating Frequency||MF (20–34 kHz) Sonardyne Wideband 3|
|Transmit Source Level (dB re 1 µPa @ 1m)||185–192 dB (5 Levels)|
|Ranging Precision||Better than 15 mm|
|Telemetry Protocol||Sonardyne SMS and modem|
|Ranges Tracked||14 simultaneous replies|
|Accuracy||0.04 to 0.1° secant latitude|
|Settle Time||<5 minutes|
|Follow Up Speed||500° / second|
|Roll and Pitch||Range||±180° (no physical limit)|
|Accuracy (Real Time)||5 cm or 5% (whichever is the greater)|
|Digital Output - Output Telegram (e.g. for ROV LED display)||Yes|
|ROV Switch - Contact Closure||Yes|
|Data Back-up - Data Logger||8 GB (expandable to 32 GB) internal memory to allow post processing|
|Remote Transducer - For ROV Applications, a Remote Transducer is Available|
|Sensors||Sound Speed Sensor||±0.03 m/s|
|Pressure - Strain Gauge or Digiquartz||0.01% FS|
|Physical||Size (Diameter x Length)||248 x 918 mm|
|Weight in Air/Water||45/17 kg|