1. Single Beam Echo Sounder Included: The Apache 3 is equipped with a single beam echo sounder. It emits a single sonar beam directly beneath the vessel, allowing for straightforward depth measurements.
2. Detection Range: 0.15 m to 200 m: Indicates the range over which the echo sounder can effectively detect underwater objects or the seafloor. In this case, it can measure depths ranging from 0.15 meters to 200 meters.
3. Resolution: 0.01 m: Represents the smallest change in depth that the echo sounder can detect. A resolution of 0.01 meters ensures precise measurements, capturing fine details in the underwater topography.
4. Accuracy: ± 0.01 m + 0.1% x Water Depth: Specifies how closely the measured depth aligns with the actual depth. The stated accuracy is within ± 0.01 meters, with an additional 0.1% of the water depth, ensuring reliable and precise depth measurements.
5. Frequency: 200 KHz: Indicates the frequency of the sonar waves emitted by the echo sounder. A higher frequency, such as 200 KHz, is suitable for detailed and high-resolution underwater mapping.
6. Sound Velocity Adjustment Range: 1300 m/s to 1700 m/s: Allows adjustment of the speed at which sound waves travel through water. This adjustment accounts for variations in water conditions, ensuring accurate depth measurements under different circumstances.
7. Beam Angle: 6.5 + 1 degree: Describes the width of the sonar beam emitted by the echo sounder. A beam angle of 6.5 degrees with a tolerance of ±1 degree defines the coverage area beneath the vessel, impacting the survey's efficiency and coverage.
