by Rick E Davis » Thu Nov 10, 2022 3:00 pm
Maybe I know which topic? The oil tank --- No, need drawings and research at NARA.
The sonar installed on BUCKLEY class DE's --- which unit? I don't have a database on Sonars installed on DE's, at least nothing that is complete. To date, the only DE I have studied and looked at drawings of, has been the EDSALL class OTTERSTETTER (DE-244). That unit because my uncle served on her in WWII. I made digital images copies of a 1943 BGP for OTTERSTETTER, but like many BGP's during early WWII, the sonar isn't shown or called out.
During WWII, there was a steady production stream of sonar systems that were upgrades/improvements (more power, etc) over the previous system being installed. Pre-war and into the first few months of the "active" war, destroyers were scheduled to have TWO sonars installed at frame 25, one on either side of the keel. But, once the war started and it was realized that a LARGE number of ASW equipped vessels were required and that the production of the specialized crystals required for sonars to work was the bottleneck, destroyers were directed to install only one system (portside). Besides DE's just entering production, types like minesweepers, etc that could fill the ASW escort gap in 1942, also needed sonars. There were a bunch of different systems in production (various systems classified as QCA/B/J/L/etc) and as I said, which sonar was installed depended on when a particular unit was completed and/or an upgrade done.
Some units got RN inspired retractable domes and transducers. Other sonar systems simply had a fixed dome over the transducer.
Bottomline, I have no idea of which sonar systems were installed across the DE fleet, much less for individual units. I guess using a typical QCJ/QCL dome as used on FLETCHER's is as good a guess as any. I have scanned pages of Weekly Overhaul Reports, which in some cases list which sonar system was installed. But, going through all those pages is a crap shoot, since I was focused on destroyers and not DE's (except DE-244). Late war, one of the newest and latest RETRACTABLE TRANSDUCER and DOME type sonars would have been installed in DE's.
Maybe I know which topic? The oil tank --- No, need drawings and research at NARA.
The sonar installed on BUCKLEY class DE's --- which unit? I don't have a database on Sonars installed on DE's, at least nothing that is complete. To date, the only DE I have studied and looked at drawings of, has been the EDSALL class OTTERSTETTER (DE-244). That unit because my uncle served on her in WWII. I made digital images copies of a 1943 BGP for OTTERSTETTER, but like many BGP's during early WWII, the sonar isn't shown or called out.
During WWII, there was a steady production stream of sonar systems that were upgrades/improvements (more power, etc) over the previous system being installed. Pre-war and into the first few months of the "active" war, destroyers were scheduled to have TWO sonars installed at frame 25, one on either side of the keel. But, once the war started and it was realized that a LARGE number of ASW equipped vessels were required and that the production of the specialized crystals required for sonars to work was the bottleneck, destroyers were directed to install only one system (portside). Besides DE's just entering production, types like minesweepers, etc that could fill the ASW escort gap in 1942, also needed sonars. There were a bunch of different systems in production (various systems classified as QCA/B/J/L/etc) and as I said, which sonar was installed depended on when a particular unit was completed and/or an upgrade done.
Some units got RN inspired retractable domes and transducers. Other sonar systems simply had a fixed dome over the transducer.
Bottomline, I have no idea of which sonar systems were installed across the DE fleet, much less for individual units. I guess using a typical QCJ/QCL dome as used on FLETCHER's is as good a guess as any. I have scanned pages of Weekly Overhaul Reports, which in some cases list which sonar system was installed. But, going through all those pages is a crap shoot, since I was focused on destroyers and not DE's (except DE-244). Late war, one of the newest and latest RETRACTABLE TRANSDUCER and DOME type sonars would have been installed in DE's.