There are hundreds of valves and gauges on a submarine and every submariner needs to know them all. Well, at first it seems just too much, but the newbie submariner or "sput" (surface puke under training) did not become qualified in a couple of weeks. It took many months.
by Gilles Poirier
Thoughts on Argentinian Submarine
This latest about the missing Argentinian submarine is very weird. The so called “missed” messages sent to a satellite has got me to think that perhaps it may come from the indicator buoy, and since the weather is awful at this time, the antenna may have been damaged. As a rule, on our “O” boats, we had 600 feet of wire attached to this buoy and to the submarine, mind you that would not really help if you are in several thousand feet of water....
Pulley Chain (Belly Belt) in Forward Torpedo Room