Re: Snapping Shrimp (what?) and Sensors

> >Well I don't mind the extra "stuff" sensors would allow, but some 
> >streamlining may be nice (but that's just me who gets the basic idea 
> >of active vs passive but is a bit lost why its so hard to tell what 
> >ship it is if we can use echo-sounder stuff to follow individual 
> >zooplankters in the ocean).
> 
> Are those Not So Wee Beasties wandering around all quiet like or are 
> they really really chatty? Its my understanding that they are chatty. 

Snapping shrimp. DON'T TALK TO ME ABOUT SNAPPING SHRIMP! These little
b.... -  
um -  creatures produce so much noise at about 120 Khz that they bollix
up the 
best frequencies for minehunting sonars. They are a Royal Pain.
Submarines use 
patches of em to hide in too, the lower harmonics are quite strong.

Yes,they are really, really chatty. Much more so than, say, a gas
turbine 
engine. Just on different
frequencies.

----------------------------------------------------------------
This message was sent using the AustarMetro Internet Web Mail System.