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Here are the questions which were asked in Silicon Sea, Leg 57:
We set a course for a waypoint at(55d 30.0'S 63d.00.0'W). At which time we must decide to either turn north up the South Atlantic Ocean west of the Falkland Islands or go around outside to the east of them. The weather will make our choice at the time. Speed 10.3 Kts, Var 14dE, Dev 2.0dW, Current Set 45d, Drift 0.8 Kts/day.
What is the TC and distance to the decision waypoint?
The chart: