What Is This Tool?
This converter transforms speed measurements from foot per hour, an imperial unit for very slow speeds, into the velocity of sound in sea water at a temperature of 20°C and a depth of 10 meters. It is mainly used to relate slow terrestrial movements to acoustic wave speeds in marine environments.
How to Use This Tool?
-
Enter the value in foot/hour representing the speed to be converted
-
Select foot/hour as the input unit and velocity of sound in sea water (20°C, 10 m) as the output unit
-
Click the convert button to get the equivalent speed in terms of sound velocity in seawater
-
Use the result to support marine navigation, underwater acoustics, or oceanographic studies
Key Features
-
Converts foot/hour (ft/h) speeds into local seawater sound velocity values
-
Supports marine acoustic and oceanographic reference conditions (20°C, 10 m depth)
-
Useful for calibration, measurement comparison, and signal conversion in aquatic research
-
Browser-based and user-friendly interface
Examples
-
100 foot/hour equals approximately 5.5643182614792e-6 velocity of sound in sea water (20°C, 10 m)
-
5000 foot/hour equals approximately 2.7821591307396e-4 velocity of sound in sea water (20°C, 10 m)
Common Use Cases
-
Converting very slow terrestrial speeds to acoustic speed references for marine instrument calibration
-
Supporting sonar ranging and depth sounding by relating slow land velocities to underwater sound speed
-
Facilitating underwater communication and navigation corrections based on local sound speed
-
Assisting oceanographic acoustic measurements and travel-time data interpretation
Tips & Best Practices
-
Ensure input speeds are appropriate for foot/hour units, which indicate very slow velocities
-
Use the conversion only for marine conditions near 20°C temperature and 10 meters depth to maintain accuracy
-
Apply converted values as references or for comparative analysis rather than direct operational speeds
-
Combine this conversion with other local oceanographic data for comprehensive acoustic modeling
Limitations
-
Conversion accuracy is limited to conditions of 20°C temperature and 10 meters depth in seawater
-
Velocity of sound in sea water varies based on temperature, salinity, and pressure, which are fixed here
-
Foot/hour unit is uncommon and typically used for slow terrestrial speeds, making practical uses in marine acoustics rare
-
Direct conversions are often theoretical or for calibration rather than everyday operational needs
Frequently Asked Questions
-
What does foot/hour measure?
-
Foot/hour is an imperial speed unit representing the distance of one foot traveled in one hour. It describes very slow velocities such as geological creep or slow actuator movements.
-
Why is velocity of sound in sea water important?
-
This velocity is essential for applications like sonar, underwater communication, and oceanographic measurements, as it helps convert acoustic travel times into distances under specific temperature and depth conditions.
-
Can I use this converter for other depths or temperatures?
-
No, this conversion is only accurate for seawater conditions at 20°C and 10 meters depth, since sound speed changes with temperature, salinity, and pressure.
Key Terminology
-
Foot/hour [ft/h]
-
An imperial speed unit indicating one foot of distance traveled per hour, used for very slow velocities.
-
Velocity of sound in sea water (20°C, 10 meter deep)
-
The speed at which acoustic pressure waves travel through seawater at 20°C temperature and 10 meters depth, influenced by temperature, salinity, and pressure.