Asked by Jat
A ship is being steered due east. A current is flowing from north to south, so that the actual velocity of the ship is 12 km/h on a bearing of 120 degree . Find the speed of the current and still water speed of the ship
Answers
Answered by
Damon
Course made good = 120 deg (math teachers do not do navigation and always misuse the word bearing. Moreover ships do knots which are nautical miles per hour, not km/hr, but anyway) which is east + 30 deg south
East component of course made good = 12 cos 30 = 10.4 km/h
South component of course made good = 12 sin 30 = 6 km/h
So
speeds
Vs = speed of ship east
Vc = speed of current south
East speeds
Vs + 0 = 10.4 = ship speed
South speeds
0 + Vc = 6 = current speed
East component of course made good = 12 cos 30 = 10.4 km/h
South component of course made good = 12 sin 30 = 6 km/h
So
speeds
Vs = speed of ship east
Vc = speed of current south
East speeds
Vs + 0 = 10.4 = ship speed
South speeds
0 + Vc = 6 = current speed
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.