It is dangerous for vessels without the operational radar（）the estuary.

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

Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）

According to the relevant regulation, lifeboat should be powered by（）.

When steering by autopilot,how often should the steering be checked?（）

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

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.

The loading of the ship must be done in accordance with（）.

Before any loading takes place any signs of the previous cargo should do（）.

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