SPECIMEN EXAMINATION FOR MASTER 



97 



Describe how the upper stock of the 

 rudder passes through the hull of a 

 vessel and the methods of lubrication 

 employed at this point. 



How is a rudder removed for repair? 



How are the pintles and gudgeons 

 constructed on a seagoing vessel? 



What is the nature of the force that 

 pintles and gudgeons are built to with- 

 stand? 



How are pintles and gudgeons 

 checked for wear? 



What is the name usually applied to 

 the constructional features of a vessel 

 indicated at "A," "B," and "C"? 



How are the sections of a cast steel 

 stern frame joined together? 



Describe how a stem frame is secured 

 to a vessel's structure and plating. 



Name the parts of the stern frame 

 sketched below which are marked "A," 

 "B," "C," "D," "E," and "F." 



\ --^— ^ ; 



How are the pintle and gudgeon bear- 

 ing surfaces on a seagoing vessel gen- 

 erally rebushed? 



How is the vertical weight of a 

 rudder sustained? 



When heavy concentrated loads must 

 be cari-ied on deck, how could you dis- 

 tribute the load or increase the bearing 

 capacity of the deck? 



What materials are employed in the 

 manufacture of stern frames? 



When vessels are constructed with 

 the stringer fastened to the sheer strake 

 below the top of the sheer strake as 

 shown at "A," why are scuppers pre- 

 ferably constructed as at "B" rather 

 than"C"? 



What is meant by camber? 



What is the strength deck of a 

 vessel? 



State how decks are supported. 



What are the functions of beams? 



How is the upper stock joined to the 

 rudder? 



What is the skeg of a stern frame on 

 a single screw vessel? 



When riveting and welding are both 

 used in fabricating a vessel's skin, 

 which process is employed first? Why? 



State the reason why freeing ports 

 are important on a vessel fitted with 

 bulwarks. 



How should freeing ports be fitted 

 for protection of personnel and where 

 shutters are installed, what precautions 

 are necessary to prevent jamming? 



'Top Edge of 

 Sheerstrake 



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T 



Deck 



Scupper 

 Opening 



