While underway at night you observe a

1、You are underway at 5 knots and see on

You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later，the contact is 8 miles directly astern of you. What is the estimated speed of the contact? （）ADead in the waterB1 knotC10 knotsD15 knot

2、While on watch at sea you must maintai

While on watch at sea you must maintain a proper lookout at all times. On a 700-foot cargo vessel being hand-steered during daylight hours in...

3、AWhen you look at the sky at night，the

AWhen you look at the sky at night，the moon looks bigger than the stars． In fact，the moon is much smaller than the stars．It is much smal...

4、At night，if you see a vessel ahead dis

At night，if you see a vessel ahead displaying the lights shown you should（）.Aprovide assistance as the vessel is in distressBstay clear as t...

5、You（）to lock the door at night.

You（）to lock the door at night.AshouldBoughtCmustDshall

6、At night you observe a vessel ahead sh

At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.Ain distressBapproaching a bend in the channelCoperating astern propulsionDintending to overtake another vessel