Echo Ranger

The echo Ranger is located at the center Port side of the control room. It's purpose is to measure the depth under keel by acoustic means. It has a fine scale in the center ranging from 0 to 100m as well as a coarse scale along the circumference, ranging from 0 to 1000m. A Rotary switch to the bottom right allows the selection between high and low range. To make a measurement press the top right button. This will send an acoustic pulse from the bottom of the boat towards the seabed. As the pulse returns the needle on the active scale will move to the appropriate value. If the Measurement is outside the range of the scale the needle will do a full revolution.