SPECIMEN EXAMINATION FOR MASTER 



101 



Illustrated below is the type of re- 

 ceptacle outlet which is currently ap- 

 proved for outside use. What advantage 

 is provided by the use of a three- 

 pronged plug required to fit this type 

 outlet? 



Would end "A" or "B" be most likely 

 to continue to propagate? Why? 



What name is given the three types 

 of plans illustrated? Name "A," "B," 



On a ship fitted with smoke detecting 

 apparatus and CO2 fire extinguishing 

 systems for the cargo holds, how is the 

 extinguishing system piping for the 

 holds checked? 



In the carriage of refrigerated 

 cargoes, such as fruit: 



(a) Why are vessels normally 

 painted white? 



(b) Why are such vessels fre- 

 quently fitted with a wooden deck? 



What safety advantage is gained by 

 the use of raked bows? 



What two factors govern the rate at 

 which water enters the hull of a dam- 

 aged vessel? 



What is meant by "slugging" a weld? 



How may "slugged" welds be de- 

 tected? 



What is the block co-efficient of a 

 vessel ? 



What are molded dimensions on a 

 vessel — as molded beam, molded draft, 

 etc.? 



Describe the function of a deck 

 stringer plate. 



Why should heating coils in a tank be 

 located as close to the bottom of the 

 tank as possible? 



