One hour before arrival at Elbe 1 light vessel，masters are advised to contact the pilot boat by（）.

The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）

There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.

If it（）fine tomorrow，we shall start unloading.

I have been instructed that on my voyage（），I shall call at Maderra to pick up some cargo.

A call between any two ship stations on an intership working frequency shall have a maximum duration of（）.

（），you can’t finish discharging tomorrow!

There is a VHF set（）the front of the wheelhouse.

（）both anchors.

Some goods are missing（）terrible weather.