The Speed - Time - Distance Calculations  are one of the basic tools a sailor uses in navigation.  Using this simple formula he can predict the time of arrival, the speed of travel or the distance and with a known heading, determine an approximate position  (Dead Reckoning - DR )

Time = Distance / Speed

Distance = Time * Speed

Speed = Distance / Time

Time is in hours.  Thus, if minutes are to be used, the time in the above equations is divided by 60.

Speed, Time and Distance Calculator
  
     Enter only two of the requested information below and the calculator will determine the one left blank :
   
1.  Enter the speed of the boat in knots:  
  
2.  Enter the distance to travel in nautical miles: 
     
3.  Enter the Time it takes to travel the desired distance: 
Hours:     Minutes: