Name:     ID: 
 
Email: 

Naval Skills Unit 4, Chapter 1 Extra Credit Assignment.

Short Answer
 

 1. 
What is the name for the imaginary lines that run through the poles around the Earth?
 

 2. 
What is a "great circle"?
 

 3. 
Into what units may degrees be divided?
 

 4. 
Answer ALL THREE questions below in the space provided:
A.  Where is the reference place for the prime meridian?
B.  What is the meridian exactly opposite the prime meridian on the other side of the globe called?
C.  What two hemispheres does this great circle line create?
 

 5. 
What are the true bearings of the cardinal points, N, E, S, W?
 

 6. 
If a ship is on course 050 degrees True, and a look out sights an object on the starboard beam at 090 degrees Relative, what is the true bearing of the object?
 

 7. 
What tool is used to determine distance on chart with a linear scale?
 

 8. 
Answer BOTH questions below in the space provided:
A.  What are soundings?
B.  How are they shown on a nautical chart?  
 

 9. 
What kind of shipboard device is used to determine depth of water?
 

 10. 
What is meant by "dead reckoning"?
 



 
         Start Over