单选题Flanking rudders effect a vessel’s heading because of the（）.A effect of the propeller flow on the ruddersB water flow due to the vessel's movement through the waterC tunnel affect of the water flow past opposing ruddersD discharge current being channel

Protest acts of violence or misconduct by the vessel's crew

State that damage to cargo or vessel was caused by improper loading or pilferage by others rather than ship's personnel

State that the damage to ship，cargo or both was due to the perils of the sea

State that the perishable cargo was damaged because of negligence by port authorities or other officials

at anchor and heading into the wind

backing into the wind

carrying lee rudder

necessary to apply a leeway correction to the course

Proceed on present course and speed since the vessel is requesting a pilot

Attempt to call the vessel on VHF radiotelephone and begin a search because the vessel has a man overboard

Attempt to call the vessel on VHF radiotelephone because it is disabled

Approach with caution because the vessel is stopped and making no way through the water

The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings

After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustment

During the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearing

After steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error

Card

Needle

Lubber's line

Gimbals

Keep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargo

Attempt to call the vessel on VHF radiotelephone because she is requesting to communicate

Approach the vessel with caution because she is dragging her anchor

Proceed on present course and speed since the vessel is requesting a tug

It's a warning of navigation for my vessel

It's an advice from Port Control to order my vessel not enter the traffic route of the harbor

It's an advice to change my estimated time of entering the traffic route

It's an order from the VTS to indicate my vessel to follow the traffic route

Proceed on present course and speed since the vessel is stopped and making no way through the water

Keep clear of the vessel because it has a diver down

Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance

Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstruction

align the vessel's tailshaft

determine the vessel's trim

determine the vessel's freeboard

locate the vessel's centerline

full ahead

full astern

half ahead

slow astern

The fishing vessel because it is to port of the sailing vessel

The fishing vessel because it is fishing

The sailing vessel because it is to starboard of the fishing vessel

The sailing vessel because it is sailing

increases

decreases

remains the same

may increase or decrease depending on the fineness of the vessel's form

compass error

variation

magnetic dip

deviation

Quadrantal spheres

Heeling magnets

Flinders bar

Fore-and-aft magnets

compass north and magnetic north

compass north and true north

magnetic meridian and the geographic meridian

your vessel's heading and the magnetic meridian

The bow will swing to starboard

The bow will swing to port

The vessel will steer a zigzag course

The vessel will steer a fairly straight course.

True position

True meridian

True course

True bearing

at high vessel speeds

at low vessel speeds

in shallow water

in deep water

the amount of liquid in the compartment

the dimensions of the liquid surface and the vessel's displacement

only the length of the compartment

the vertical position of the liquid in the vessel