Question 741Navigation General70% to pass
Your vessel is on course 270°T, speed 10 knots. The apparent wind is from 10° off the port bow, speed 30 knots. From which direction is the true wind?
AI Explanation
The correct answer is B) 255°T.
To determine the direction of the true wind, we need to use the relationship between the vessel's course, speed, and the apparent wind direction and speed. The true wind direction is the wind direction that would be measured if the vessel was stationary.
The formula to calculate the true wind direction is: True Wind Direction = Apparent Wind Direction + Vessel's Course - 180°.
In this case, the apparent wind is from 10° off the port bow, which is 270° - 10° = 260°. Adding the vessel's course of 270° and subtracting 180° gives us the true wind direction of 255°T.
The other options are incorrect because they do not correctly apply the formula to determine the true wind direction.
Related Questions
#739 Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 54s at the 1500 GMT time tick. What is the chronometer rate? #740 Which type of front forms when a cold front overtakes and forces a warm front upwards? #742 Which of the four adjustable errors in the sextant causes side error? #743 A source of an air mass labeled mTw is _______________.#744 Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate?