A Doppler log in the volume reverberation...

Question 1 of 2707066636ee928f7522a1c5195f2

A Doppler log in the volume reverberation mode indicates __________.

Back

Question 1 of 27070

Q

A Doppler log in the volume reverberation mode indicates __________.

🔍 Key Concepts

• Doppler log operation – what quantity does a Doppler log primarily measure? • Difference between speed through the water vs speed made good over the ground • Meaning of volume reverberation mode (echo returns from water mass vs sea bottom)

💭 Think About

• Ask yourself: Is a Doppler log fundamentally a speed-measuring device, a depth finder, or a current meter? • How does the source of the echo (seabed vs particles in the water) change what the instrument can tell you? • If echoes are coming from the water volume instead of the bottom, are you relating motion to the seabed (ground) or to the water itself?

✅ Before You Answer

• Identify what a log normally measures on a ship (speed or depth?). • Distinguish clearly between speed through the water and speed over the ground / made good. • Consider whether current set can be obtained directly from this mode alone, or if it would need comparison of two different measurements.