MARINE
Water Depth Calculator
Echo sounding · Speed of sound · Depth measurement · Signal timing · Sonar calibration
acoustic
depth sounding
Sonar & environmental parameters
seconds
Time for sound to travel to bottom and back
°C
PSU
Practical salinity units (0-45)
atm
1 atm = surface, +1 atm per 10m depth
degrees
Transducer beam angle (narrow = more accurate)
Depth formulas
- c = 1449.2 + 4.6T - 0.055T² + 1.4(S-35) + 0.017D sound speed (m/s)
- d = (c × t) / 2 depth (m)
- Area = π × (d × tan(θ/2))² footprint area
Water depth
1,840
m
Sound speed
1,534
m/s
Footprint radius
193
m
Sonar profile
Surface
Bottom
Beam
Beam angle: 12°
Depth details
One-way time
1.2
s
Temperature
15
°C
Salinity
35
PSU
Pressure
1.0
atm
Depth & sonar parameters
calibrated
Water depth
1,840 m
Footprint area
117,000 m²
Signal travel
2.4 s