Handling a Submarine 



The success of an attack and the very lives of the crew 

 depend almost entirely upon their ability to act as one man 



Wheel 

 controlling 

 dteerinq 

 fodtfers 



The U. S. S. 

 Compressed 

 air nas just forced 

 out the water from 

 her huge ballast tanks 

 so that she rides 

 awash on the surface 



At left: Interior of 

 the "K-l." During 

 an attack, the com- 

 mander stands at the 

 periscope and directs 

 the men at the wheels 

 of the controls 



Wheels tontrollinq 

 diving rudders 



Battery of compressed-air buoyancy 

 controls of balance tanks. 



EVERY submarine has its commander 

 — generally a captain — who acts as 

 the very brains of the ship. No one 

 else can give orders; for so interconnected 

 are all the machines, that the conflicting 

 commands from more than one officer 

 would almost surely result in an accident. 

 Hence every one reports directly to the 

 captain through the second officer in com- 

 mand, who, by the way, is also responsible 

 for the correct operation of everything 



from the ballast tanks to the torpedoes. 



In making the attack, the captain mans 

 the periscope in the main operating room, 

 just beneath the conning tower. The 

 lenses and prisms in the periscope tube 

 transmit the images from the sighting-piece 

 above the water down to the periscope 

 eye-piece. 



When the vessel dives, the decks are 

 first cleared. Then the hatches are sealed 

 down and the oil engines are stopped, in 



