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#21
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Going from S-3s (new, but always down due to computer dumps), to H-3s (want
contact? simple - you just PING), to H-2s ("Pilot, Senso, I feel a disturbance in the force. It could be a submarine."), I was pretty sure that my next duty station would include some de-mothballed Nepture, formerly held in deep reserve for just this occasion. I know this may sound stupid, but what was the difference between Julie and Jez? We had Jezebel when I first started in ASW but it was on its way out. Eight years later I reported to the USS Kirk (Foreign Legion boat in Yokosuka) and found its entire sonobuoy locker filled with the old 60 pound roto-chute antiques that they used to train us on at A-school. Our failure rate with them was about 50-75%, depending on whether we really needed them to work or not. ':\ Sniffer was a memory by then - I never got to even see the system. Did it actually work...?? v/r Gordon ====(A+C==== USN SAR Aircrew "Got anything on your radar, SENSO?" "Nothing but my forehead, sir." |
#22
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"Gordon" wrote in message
Going from S-3s (new, but always down due to computer dumps), to H-3s (want contact? simple - you just PING), to H-2s ("Pilot, Senso, I feel a disturbance in the force. It could be a submarine."), I was pretty sure that my next duty station would include some de-mothballed Nepture, formerly held in deep reserve for just this occasion. Well, your life's not over, yet!g I know this may sound stupid, but what was the difference between Julie and Jez? "Jezebel" was a codeword for straight, passive acoustic analysis. Synonomous with LOFAR. Originally no directional capability. DIFAR got us bearing lines (however tentative). Julie was a system named after a famous 14th Street stripper. Her act was supposed to be pretty arousing, "making passive boys go active." So, when some bright fellow got the idea that you could bomb a LOFAR bouy with a SUS and get a range circle you made a passive system active. Thus, the name. It worked with the aircraft laying a circular pattern (4000 or 8000 yards, IIRC) of four bouys. The aircraft flew the circle, maintaining a MAD watch while bombing the bouys and listening for echos. One got you a range circle, two got you ambiguous fixes, and three got you an unambiguous fix. Three fixes got you attack criteria. Of course, it didn't always work that way. In addition to circles from direct bombing you could also get elipses from the A + B range. Try plotting an elipse using a manuevering board, a pair of dividers with a string attached, and a pencil while being bumped around at 100' (keeping one eye on the altimeter so your CAPC did not get you wet). As you might guess the data rate was pretty low and against a high speed sub it was not all that effective. The best thing about it was probably that you could make a lurking sub run, mesing up his targeting. If he were a diesel boat (lots of them in the Soviet Navy in those days) you make him chew up his battery. We really did not use Julie much outside of CAPC tests and occational readiness quals. We swapped our S2Es for S2Gs about half way through my tour and that gave us DIFAR, DICASS, and such. We had Jezebel when I first started in ASW but it was on its way out. Eight years later I reported to the USS Kirk (Foreign Legion boat in Yokosuka) and found its entire sonobuoy locker filled with the old 60 pound roto-chute antiques that they used to train us on at A-school. Our failure rate with them was about 50-75%, depending on whether we really needed them to work or not. We didn't use many of the A size bouys (what you found) but used the B size carried in chutes mounted at the back of the nacelles. They were actually pretty reliable. Sniffer was a memory by then - I never got to even see the system. Did it actually work...?? Well, define "work"!!!!!g In the mid-Atlantic we actually tracked a snorting boat one day, but I think that was once in 2.5 years. On the other hand it worked great as a NAVAID for finding I-95!g ASW in those days was a very labor intensive business. A good crew could give a sub a run for its money. If the sub crew was good they would get most likely get away if active tracking measures were used. Two good crews could generally kill one, even if the sub were pretty good. The ideal was three Stoofs and three Whistling **** Cans. One helo in the dip, and two in transit/setting up with the Stoofs running continuos MAD tracking (mark on top the hot helo and run out the bearing to the contact). If everybody was on their game we could (and did) hold Soviet and U.S. fast attack nukes long enough to generate valid attack criteria. Sadly, such datums were rare. But when we had one and when it worked it was almost better than sex!!!!g Bill Kambic If, by any act, error, or omission, I have, intentionally or unintentionally, displayed any breedist, disciplinist, sexist, racist, culturalist, nationalist, regionalist, localist, ageist, lookist, ableist, sizeist, speciesist, intellectualist, socioeconomicist, ethnocentrist, phallocentrist, heteropatriarchalist, or other violation of the rules of political correctness, known or unknown, I am not sorry and I encourage you to get over it. |
#23
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Thanks for the rundown, Bill. I guess I was vaguely aware of those methods,
but never really had a clear picture of how it all worked together - thanks for giving me the abbreviated course. v/r Gordon |
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