A boat leaves port and follows a course of N80E at 15 knots for 3 hr. Then, the boat changes to a new course of 529E at 18 knots for 4 hr and 40 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 107.4 nmi from port. 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 21 knots? Round to the nearest minute. The rescue boat will arrive in approximately 5 hr 7 min.. Part: 2/3 Part 3 of 3 (c) What course should the rescue boat follow? Round the answer to one decimal place if necessary. The rescue boat should follow the heading S 51.7 E