Ship Driver Navigation and Chart Reading

Question 1

What does a nautical chart's depth sounding number represent?

Accepted Answer

Water depth at low tide

Answer

Distance to nearest port

Answer

Height above sea level

Answer

Speed limit in the area

Question 2

What color are safe water marks (mid-channel buoys) in the US system?

Accepted Answer

Red and white vertical stripes

Answer

Green and white

Answer

Red and green

Answer

Black and yellow

Question 3

When entering a US port from seaward, where should red buoys be?

Accepted Answer

On your right (starboard side)

Answer

On your left (port side)

Answer

Dead ahead

Answer

Behind you

Question 4

What is a compass rose on a nautical chart used for?

Accepted Answer

Reading true and magnetic bearings

Answer

Measuring distances

Answer

Determining water depth

Answer

Identifying shipping lanes

Question 5

What does the abbreviation 'RK' indicate on a nautical chart?

Accepted Answer

Rocky bottom

Answer

Restricted channel

Answer

Radar reflector keeper

Answer

River kilometer marker

Question 6

A vessel's DR (dead reckoning) position is calculated using which information?

Accepted Answer

Last known position, speed, course, and elapsed time

Answer

GPS coordinates alone

Answer

Radar and depth sounder readings

Answer

Visual landmarks only