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Q3. A tanker is travelling due South at 19 knots. At 1200 hours the tanker observes a passenger ship 10.5 nautical miles due West heading south-east at 21 knots.

Calculate EACH of the following:

(a) the relative velocity and apparent course of the passenger ship as seen from the perspective of the tanker.  (8)

(b) the distance of closest approach between the vessels. (2)

(c) the approximate time at which closest approach occurs. (6)