GUIDE QUESTIONNAIRES for seafarers [3]

Welcome to your GUIDE QUESTIONNAIRES for seafarers [3].

1.

What previous hours does ECDIS must have the capability to preserve the record of the voyage track?

24 hours

12 hours

4 hours

6 hours

2.

What should you apply to a fathometer reading to determine the depth of water?

Add the sea water correction.

Subtract the draft of the vessel.

Subtract the sea water correction.

Add the draft of the vessel.

3.

When using a recording depth finder in the open ocean, what phenomena is most likely to produce a continuous trace that may not be from the actual ocean bottom?

Multiple returns reflected from the bottom to the surface and to the bottom again

Echoes from schools of fish

Poor placement of the transducer on the hull

Echoes from a deep scattering layer

4.

When using an Electronic Plotting Aid (EPA), what should you consider in order to evaluate the information displayed?

The target vessel's generated course and speed are based solely on radar inputs.

The trial maneuver feature will automatically determine a course that will clear all targets.

You cannot determine if a small target has been lost due to sea return.

Navigational constraints may require a target vessel to change course.

5.

With regard to GPS, when does a civilian receiver may be capable of achieving the same accuracy as a military receiver?

When selective availability is set to zero

When the horizontal dilution of precision is high

When the satellites are all below 15° in elevation

When your vessel is equipped with a Doppler receiver

GUIDE QUESTIONNAIRES for seafarers [3]

Leave a Reply Cancel reply

Recent Posts

Leave a Reply Cancel reply

Recent Posts

Tags