Gemini NBI

The Gemini NBI is a high-performance multibeam imaging sonar designed for underwater operations. Featuring a narrow 1º vertical beam and 130 swaths, it produces sharp, real-time acoustic images that cut through the water with exceptional clarity and a high refresh rate.

Applications

Energy Underwater Vehicles Survey & Hydrographic

The Gemini NBI is based on the proven design of the Gemini 720i but features a 1º vertical beam, compared to the 720i’s 20º beam. This narrow beam width allows users to more accurately pinpoint the position of acoustic targets, making it ideal for applications where precise target monitoring, rather than general obstacle avoidance, is critical.

Operating at 620kHz, the Gemini NBI delivers images with a 10mm range resolution and a 0.5º horizontal angular resolution, resulting in extremely sharp sonar imagery. Its advanced multibeam transducer design supports a 130-sector scan width and achieves update rates of up to 30 scans per second, allowing for rapid and effective maneuvering in low-visibility conditions.

Built to withstand the harshest environments, the Gemini NBI is depth-rated to 4000m and constructed from durable titanium, making it well-suited for subsea mining, excavation, and other challenging applications.

The Gemini NBI is compatible with Tritech’s Seanet Pro software, enabling integration with other Tritech sensors. A standalone Gemini software package is also available, offering a tailored control and display interface with features such as click-and-track functionality, engineering measurement tools, data recording/ playback, screen capture, range and gain control, color palette selection, and cursor reporting. A software development kit is available for autonomous vehicle operations.

Resources

Datasheet

Gemini NBI (PDF 204 KB)

Software

Genesis v1.10.0.21 (MSI 235 MB)

Supplements

Product Guide 2023 (PDF 3 MB)

Manual

Gemini NBI (PDF 4 MB)

STEP Files

Gemini NBI – p/n S10164 (ZIP 1 MB)

Gemini-NBI-1

Gemini-NBI-2

Gemini-NBI-3

Frequently Asked Questions (FAQs)

2. Where can I find the calibration frequency for Tritech products?

 The calibration frequency guidance document can be found under the technical notices on the Resources page. To go directly to them click on the link “Technical Notices”
Alternatively, the document can be accessed here: Calibration Frequency Guidance

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Explore our range of related products to complement the Gemini NBI’s capabilities.