Oct 2024 PM TCN
Q.1) The following bearings of Bill of Portland light (50° 30.8’N, 002° 27.4’W) were observed by a ship. At 1000 hrs 325°(T), at 1030 hrs; 355°(T) and at 1100 hrs, 025°(T). If in above duration she had steered a course of 258°T and current set N’ly. Find her course and speed made good and rate of the current experienced. Engine Speed 12 Kts
Answer:
CMG – 265° T
SMG – 11.8 Kts
Rate – 1.6 Kts
Q.2) At 1030 hrs, a ship observes the horizontal sextant angle between Hope’s Noe (50° 274.8’N, 003° 29’W) and Berry Head (50° 24’N, 003° 29’W) to be 30°. She then steers a course of 200°(T) at a reduced speed of 10 Kts. At 1130 hrs, the range of Start Point (50° 13.5’N, 003° 38.8’W) was observed to be 10’ on radar. Find the position of vessel at 1130 hrs and her course and speed made good, if current set 020°(T) @ 3 Kts.
Answer:
1130 Hrs Posn: 15°13.6’N; 003°23’W
CMG – 200°T
SMG – 7 Kts