A tide is called diurnal when（）.

In the Northern hemisphere northerly winds may cause temperature（）.

Berthing means bringing a vessel to her berth until（）.

Bales close to the deckhead should be covered to prevent（）.

ECDIS must be able to perform all of the following EXCEPT（）.

（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.

（）is on the panel of radar.

Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.

What is it called when it is possible to ignite the vapour above the oil?（）

（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.