National Geographic : 1954 Jul
The Bathyscaphe, F.N.R.S.3 Vertical-speed indi cator shows rate of Sonic code descent and ascent. to surface Snorkels supply air to sphere when bathyscaphe is surfaced. Two 1,300-pound bat Sonic obstacle detector Compass series drop automati probes for danger when cally as ballast in emer cruising at the bottom. gency. Skids prevent Aft air tank damage to fragile hull. -- Battery skids Stern light Buoyancy tanks filled with gasoline Stabflfzin ke Shot silos 2,000-watt searchlights el 3 Magnets 3 Vertical searchlight Edgerton A for motion pictures electronic flash-'' Sonic detector registers distance from bottom. Depth recorder Radiotelephone % Conical Plexiglas viewing port held tight by sea pressure. 5 Peculiar pop-eyed sharks like this have been seen on the bottom during most of the Guide chain 4 bathyscaphe dives.