A boat leaves port and follows a course of N71 E at 12 knots for 3 hr and 20 min. Then, the boat changes to a new course of $27'E at 15 knots for 4 hr and 20 min. Part 1 of 3 (a) How far is the boat from port? Round the answer to one decimal place if necessary. The boat is approximately 80.9 nmi from port. Part: 1 / 3 Part 2 of 3 (b) Suppose that the boat becomes disabled. How long will it take a rescue boat to arrive if the boat leaves from port and travels 20 knots? Round to the nearest minute. The rescue boat will arrive in approximately hr min