SPECIMEN EXAMINATION FOR CHIEF MATE 



79 



What is the purpose of the check 

 valve shown on a pier's water connec- 

 tion used for connecting a ship's fire 

 line to a shore supply of water pres- 



sure; 



Why is an air gap, such as that illus- 

 trated, required in sinks, wash basins, 

 tubs, trays, washing machines or other 

 similar receptacles that may be con- 

 nected to a potable water supply? 



AIR GAT 



How should potable water piping be 

 marked? 



How would you detect the presence of 

 rats on board your vessel ? 



Describe the four methods which may 

 be employed to prevent rat infestation 

 of a vessel. 



30. RULES AND REGULATIONS FOR INSPECTION 



How often must the lifeboat crew of 

 a passenger vessel be exercised in their 

 duties in the lifeboats, i.e., rowing, and 

 operating hand propelling gear in the 

 water? 



How often must each lifeboat of a 

 passenger vessel be lowered to the 

 water? 



What members of the crew, if any, 

 are not required to exercise at the oars? 



Where must copies be posted of the 

 placard "Instructions for the Use of the 

 Gun and Rocket Apparatus for Saving 

 Life from Ship Wreck as Practised by 

 the United States Coast Guard?" 



What is the minimum standard for 

 natural or artificial lighting in snaces 

 where the crew is regularly employed 

 or quartered? 



What color paint must be used in 

 crew spaces? 



What persons are excluded from the 

 pilot house and bridge of vessels under 

 way? What persons may be allowed on 



OF MERCHANT VESSELS. 



the bridge upon the responsibility of 

 the Master? 



Describe the signalling lights required 

 on vessels over 150 gross tons both for 

 new and existing vessels. 



What certificate is accepted as prima 

 facie evidence of compliance with the 

 Rules and Regulations for Bulk Grain 

 Cargo? 



Must the station bill set forth the 

 duties and duty stations of apprentices, 

 beauty parlor operators, horse tenders, 

 or workaways? Explain. 



State in detail the requirements of 

 the Regulations with respect to drills 

 with line throwing appliances? 



What vessels are required to have an 

 emergency squad? Do the Regulations 

 permit other than required vessels to 

 have such a squad? 



What are the duties of the emergency 

 squad ? 



What is the signal for the assembling 

 of the emergency squad? 



