Oh, it is Zhongkuai Island, just 20 miles away from us. What is the heading now?S2:330(three three zero).S1:Station at the wheel, change from auto-pilot to manual mode.S2:OK, now manual pilot is working.S1:Good. Can you see the peak ahead of the island?S2:It is the predominant point among them?S1:Yes. Just keep the island and the peak in transit.S2:OK. Now the heading is 340(three four zero) degrees.S1:There is much danger in our port side, so nothing to port.S2:Understood.S1:Now ship's position deviates from her course heavily, leeway and drift angle about 3 deerees. How about the wheel?S2:Oh, it is a bit sluggish. In order to maintain the course to steer, at least 10 degrees.S1:The tird is coming with us, so set course 343 (three four three) degrees.S2:Roger, course 343(three four three) dgerees now. Q4:In order to maintain the course to steer, what rudder angle shall be applied?