Tritech’s Gemini Narrow Beam Imager (NBI) has been field-proven by Reef Subsea. The NBI successfully monitored the trenched installation of 6-in. and 2-in. cable, while using controlled flow excavation techniques. The seabed conditions around the site varied considerably; however even with high turbidity Reef was able to clearly monitor the cables. The Gemini (NBI) provides operators with real-time high-speed acoustic images from a narrow vertical beam covering a 130° swath. Operating at 620kHz the NBI provides imagery at a 10mm range resolution and with a 0.5° horizontal angular resolution delivers sharp sonar imagery.
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