The Ping sonar is a single-beam echosounder that measures distances up to 30 meters underwater, with a 30 degree beam width, and 300 meter depth rating.
The Ping can be used in a number of ways, including as an altimeter for the BlueROV2. Another Blue Robotics distributor, Marine Distribution and Consulting, put together this video with this use case:
Blue Robotics has also put together a great Technical Guide to get you started.
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