What is the normal length of anchor cable used to anchor a vessel?（）

PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?（）

There is not（）depth of water around the area centered at the lighthouse.

To reduce mild fever the MOST useful drug is（）.

The vessel was drifted off from her（）due to strong wind.

What is the（）of the turning circle in mavoeuvring?

The two main types of load cells used in mooring tension gauges are（）.

The best method to stop a vessel from dragging anchor in a sand bottom is to（）.

Tripping defects in anchors frequently occur in（）.

The expression DROP ANCHOR means（）.