74 



UNITED STATES COAST GUARD 



In replacing strainer plates for hold 

 bilge suctions, what is the amount of 

 plate that must be perforated with 

 holes for the water to pass through? 



In washing out holds or in circum- 

 stances where it is feared the nature of 

 the cargo will tend to clog the strainer 

 plates should pumping water be neces- 

 sary, what precautions might be taken 

 to insure that the water will flow into 

 the well? 



What markings are required on the 

 trick wheel in a vessel's steering engine 

 room, in order that any possible mis- 

 understanding of orders may be averted, 

 should it be necessary to have a man 

 steering from there directed by orders 

 from outside? 



Why must indiscriminate welding of 

 padeyes or other fittings on a vessel's 

 structure be avoided, even when no fire 

 hazard is involved? 



What precautions with respect to the 

 bilge wells and strainers would you 



take on a vessel prior to taking 3 feet 

 of sand ballast in the lower hold? 



When spray painting is being done in 

 a compartment, what precautions must 

 be taken against fire or explosion? 



Describe the specifications for wedges 

 to be used in battening hatches. 



Describe the specifications for batten- 

 ing bars to be used on hatches. 



What number of locking bars is re- 

 quired for hatches? 



In painting decks, what precautions 

 should be taken against creating a slip- 

 ping hazard for personnel working 

 about the deck? 



Where a vessel is fitted with a positive 

 means for closing a nonreturn valve 

 above the freeboard deck, what notice 

 is required? 



Note: Candidates for Chief Mate's Licenses 

 may be asked questions on ship construction 

 similar to those in the Master's Examination in 

 connection with the subject of seamanship. 



25. CARGO STOWAGE AND HANDLING. 



A vessel loading grain has the feeder 

 constructed in the square of the hatch. 

 The distance from the feeder to a bulk- 



head is 30 feet as sketched. What pre- 

 caution is required by the grain regula- 

 tions? 



