If you think detecting an SS class boat only is done by the noise it makes, your sadly mistaken. If you think than an SSN is more noisy due to its reactor and associated cooling, your again incorrect.
The noise inside the hull doesn't matter one bit. What matters is what escapes through the hull. If it doesn't get outside the hull, either through mechanical vibration or auditory vibration - it doesn't matter.
If no noise escapes, then the only other sounds you have to deal with are external ones - the screw noise, waterflow and any mechanical transients like an external tube door opening. Hull forms are designed to minimize waterflow noise, while propulsion noise is significantly reduced by pumpjet tech. Mechanical transients are always kept to an absolute minimum.
Never fool yourself into thinking that sound is the only way to find a sub. MAD is another very publicly known way, and the sensitivity of such detectors is often underestimated. There are other, more.....remote ways of finding them too. Sound is an important way without a doubt, but its not the only one....
__________________
Good Hunting!
Captain Haplo
|