PRINCIPLES OF NAVAL ENGINEERING 



'2 HIGH PRESSURE STEAM 



LOW PRESSURE STEAM 



I I EXHAUST STEAM 



R°o°o°o'g| COOLING STEAM 



147,99 



Figure 12-24,— Flow of steam in Type IV propulsion 

 unit (cruising turbine not in use). 



the amount of water used on board ship. Water 

 consumption is computed in (1) gallons of make- 

 up feed per mile under way, (2) gallons of make- 

 up feed per hour at anchor, and (3) gallons of 

 potable water per man per day. 



The increase or decrease in a ship's fuel 

 economy depends largely on the operation of 

 each unit of machinery; economical operation 

 further depends on personnel understanding the 

 function of each unit and knowing how units are 



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