83. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T, 68 miles from you. What is the time to intercept if you make 13 knots?

The intercept time is calculated using the Law of Cosines, considering the initial separation, speeds, and the angle between the bearing to the vessel and its course, resulting in approximately 7 hours and 37 minutes.