SECT. 5] 



DEEP SUBMERSIBLE* FOR OCEANOGRAPHIC RESEARCH 



503 



Fig. 5. Diagram of the interior arrangement of the bathyscaph Trieste's Krupp sphere 

 showing starboard and port views. (Drawing by Ateliers de Constructions Mecanique 

 de Vevey, Switz.) 



10. 



11. 



12. 

 13. 

 14. 

 15. 

 16. 

 17. 



Control panel for lights. 



Control panel for the ballast and 



miscellaneous equipment. 



Control panel for the propulsion motors. 



Diverse equipments. 



Reserve alkali for absorption of carbon 



dioxide. 



Chronometer. 



Instrument for recording the amount 



of ballast expended. 



Pressure gauges. 



Instrument to measure the carbon 



dioxide level inside the sphere. 



High -pressure tube for connecting the 



pressure gauges with the outside water. 



Leadthrough for electric cables entering 



the cabin from the outside. 



Telephone. 



Motion picture camera. 



Still camera. 



Various oceanographic instruments. 



Multi-channel recorder. 



Water -current meter. 



18. Electric thermometer. 



19. Pendulum to indicate any departure of 

 the cabin from a level position. 



20. Battery rack and silver-zinc batteries. 



21. Bottles of compressed air for blowing 

 the entrance chamber. 



22. Oxygen for breathing. 



23. Alkali for carbon-dioxide absorption. 



24. Electric control panel. 



25. Acoustic telephone (wireless). 



26. Ultrasonic echo-sounder. 



27. Various electronic oceanographic equip- 

 ment. 



28. Tachometer for measuring vertical 

 speed of ascent or descent. 



29. Indirect interior lighting. 



30. Supports of the cabin's instrument rack. 



31. Seat. 



32. Flooring of the cabin. 



33. Shell of the sphere. 



34. Entrance door. 



35. Windows. 



A. Trieste's Cabin 



The crew of the Trieste is encapsulated in a spherical watertight chamber. 

 This cabin or gondola is forged of steel alloyed with nickel, chromium and 

 molybdenum. Two spheres have been constructed for the Trieste, both with an 

 exterior diameter of 2.18 m. The first wa forged in two hemispherical sections 



