This is very easy app to find true direction of wind and it's speed along with it shows sea condition of the prevailing circumstances.
Function: You need to fill out the some of your present data while ship at anchor or underway
1. Ship's Heading or course
2. Ship's Speed
3. Relative Wind speed you assume or finds by your equipment
4. The side of relative wind, Starboard or Port
5. Relative Wind Direction

Features:-
After entering Above data, Click on "Calculate True Wind" and you will get following data
1. True Direction Of Wind
2. Wind Speed
3. Beaufort Scale
4. Sea State
5. Swell

It is easy way to find true wind without hassle