Survey

SeaBat T50 Extended Range (T50-ER)

Bridging the Gap Between Shallow Water and the Continental Shelf

Product Overview 

The SeaBat T50 Extended Range (T50-ER) is the specialized "mid-water" powerhouse of the T-series family. While the standard T50 is the industry benchmark for high-resolution shallow-water surveys, the Extended Range version was engineered to fulfill a specific market need (originally driven by the Danish Navy): the ability to maintain ultra-high resolution in the shallows while having enough "reach" to map down to 900 meters.

To achieve this, Teledyne redesigned the transmitter (TC2187), increasing its size and power while lowering the frequency floor to 150 kHz. This makes it the ideal tool for research vessels and survey teams working in deep fjords, continental shelves, or offshore renewable sites.

Specification150 kHz (Deep)200 kHz (Mid)400 kHz (Shallow)
Max Depth (FM)900 meters900 meters425 meters
Typical Depth (CW)600 meters600 meters300 meters
Beam Width (Across)1.5°1.0°0.5°
Beam Width (Along)1.5°1.0°0.5°
Number of Beams10 to 102410 to 102410 to 1024
Swath CoverageUp to 165°Up to 165°Up to 150°
  • Extended Frequency Range: Fully agile from 150 kHz to 420 kHz. You can use 400 kHz for millimeter-precision work in 10m of water, then switch to 150 kHz to maintain a wide swath as you move into 600m+ depths.
  • 900m Capability: The T50-ER effectively doubles the usable depth of the standard T50-P/R, allowing for surveys throughout the continental shelf without needing a dedicated deep-water ship-hull sonar.
  • Large Aperture Projector: The TC2187 projector is larger and more powerful than the standard T50 transmitter. It provides the high acoustic source level required to penetrate deep water while maintaining a narrow beam.
  • Compressed Water Column Data: To handle the massive data volumes of deep-water pings, the T50-ER uses intelligent algorithms to compress water column data, allowing you to record backscatter from the entire water column without crashing your storage.
  • 1772138279_SeaBat T50 Extended Range product leaflet.pdf

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