SPECIMEN EXAMINATION FOR THIRD MATE 



19 



What is the usual method employed 

 on merchant vessels to stopper off a 

 wire mooring line? 



What is the usual method employed 

 on merchant vessels to stopper off a 

 manila mooring line? 



Why is the rudder of a single screw 

 vessel most effective when the propeller 

 is turning ahead ? 



What are the Coast Guard instruc- 

 tions for use of the breeches buoy? 



What are two reliable signs that the 

 vessel is in the vicinity of field ice? 



In the event of grounding, what con- 

 sideration must be kept in mind before 

 ordering the use of the engines in an 

 effort to get into deeper water? 



Man overboard from a steamship. 

 What would you do? 



Describe at least three methods which 

 are employed on merchant vessels to 

 reduce corrosion. 



On a steamship running into and 

 shipping heavy seas, what would you 

 do? 



How can two mooring lines be made 

 fast to one bollard on a pier so as to 

 permit casting off either line without 

 slacking the other? 



On a deep-sea vessel you receive or- 

 ders to get the anchors ready for an- 

 choring in an hour. Describe in detail 

 all the steps that should be taken to 

 have both anchors in complete readi- 

 ness. What other gear should be avail- 

 able? 



What is the usttal amount of chain 

 used when anchoring to a single an- 

 chor? What factors must be considered 

 in determining the amount of chain 

 used? 



On a single screw steamer (right- 

 hand propeller) going full ahead, the 

 engine is put full speed astern. Which 

 way will the stern swing (no wind or 

 current) if the rudder was : 



(a) Amidship; 



(b) Hard left; 



(c) Hard right? 



Why should rubber gaskets not be 

 painted or greased? 



Is it possible to steer a vessel laying 

 at anchor? 



List at least six items of ground 

 tackle ordinarily carried by an ocean- 

 going power-driven vessel of 15,000 

 tons displacement (approximately). 



When making fast alongside where 

 there is a big rise and fall of tide, 

 what care is required? 



How could you make the eye of a 

 mooring line safe for handling? 



What is the effect of storm oil? 



Why is a buoy-rope used on an an- 

 chor? 



How would you make a quick turn 

 to starboard in a twin-screw vessel with 

 headway and both propellers turning 

 full ahead? 



With what equipment should a ship 

 be provided to prevent injury from 

 stepping into the hawse pipes? 



If you were in charge of the foc'sle 

 head when getting underway from an 

 anchorage, what information would you 

 furnish the bridge? 



How would you protect a line in way 

 of a mooring chock? 



On an old-fashioned stock anchor, 

 what is the purpose of the stock? 



On the modern, commonly used form 

 of stockless anchor, what part serves 

 the same purpose as the stock of an 

 old-fashioned anchor? 



State the effect on handling qualities 

 caused by variation in a vessel's dis- 

 placement; i.e., what may be expected 

 in a deeply loaded ship, a ship in the 

 light condition, etc. 



Is a vessel under better control when 

 going ahead on the engines or when 

 backing? 



What is a devil's claw and how is it 

 used? 



V/hat is meant by a left-handed 

 screw? 



Describe briefly the action of educ- 

 tors fitted on many modern vessels for 

 pumping water out of a chain locker. 



What is the purpose of the preventer 

 bars on the Rottmer type releasing gear 

 illustrated? 



PREVENTER 



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