Question 46Navigation Problems70% to pass
On 8 April your 0830 zone time DR position is LAT 22°49.0'N, LONG 84°37.0'W. Your vessel is on course 228° T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
AI Explanation
The correct answer is C) 1144.
To calculate the zone time of local apparent noon (LAN), we need to use the given information about the vessel's position and course.
The vessel's position at 0830 zone time is LAT 22°49.0'N, LONG 84°37.0'W, and it is traveling on a course of 228° T at a speed of 19.0 knots. Using this information, we can calculate the time of LAN, which is the time when the sun is at its highest point in the sky for the vessel's location.
The formula to calculate the zone time of LAN is: Zone Time of LAN = 12:00 + (Longitude in degrees / 15) - Time Zone Correction. In this case, the longitude is 84°37.0'W, which is approximately 84.62° W. Plugging this into the formula, we get: Zone Time of LAN = 12:00 + (84.62 / 15) - 4 = 11:44, which is the correct answer, C) 1144.
The other options are incorrect because they do not accurately calculate the zone time of LAN based on the given information.
Related Questions
#44 The true course between two points is 078°. Your gyrocompass has an error of 2°E. You make an allowance of 3° leeway for a north wind. What gyro course should be steered to make the true course good?#45 On 2 October your 1845 DR position was LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 20°45.6' T, bearing 201.5°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 00m 51s fast. What star did you observe?#47 On 15 November your 0813 zone time (ZT) fix gives you a position of LAT 22°30.0'N, LONG 67°28.0'W. Your vessel is on course 164°T, and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1215 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 49°46.0'. What is the latitude at 1200 ZT?#48 On 10 October your 1500 zone time DR position is LAT 27°35.6' S, LONG 44°49.0' W. You are on course 342°T at a speed of 24 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?#49 On 22 June your 0424 DR position is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified star bearing 154°T at an observed altitude (Ho) of 15°01.2'. The chronometer reads 12h 23m 24s, and is 01m 32s slow. What star did you observe?