The pace of US destroyer construction peaked in 1944 and early 1945 with the Allen M. Sumner -class 2,200-tonners. Nine additional (for a total of 35) ships were converted to radar picket destroyers (DDR) in the early 1950s; these typically received only one 3"/50cal twin mount to save weight for radar equipment, as did the wartime radar pickets. Dimensions & Data if(MSFPhover) { MSFPnav3n=MSFPpreload("_derived/sumner_class.htm_cmp_clearday110_hbtn.gif"); MSFPnav3h=MSFPpreload("_derived/sumner_class.htm_cmp_clearday110_hbtn_a.gif"); } Two (Bath Iron Works Frank Knox and Southerland, numbered in sequence and launched without pause in the production schedule after Drexler, the yards last Sumner) commissioned in 1944. [1] Postwar, the remainder were decommissioned and put into reserve. Termed "Spring Styles" by the Preliminary "Spring Styles" plans usually represent only some of the options Originally projected as Kingfisher E in 1946, it was subcontracted to Goodyear, and redesignated in September 1947 as SUM-2 (SUM-N-2 from early 1948) Grebe. With ASROC continuing to provide a standoff ASW capability, the Gearing FRAM Is were retained in service for several years, with most being decommissioned and transferred to foreign navies 19731980. for how to set up for TOWING, Plans for the PIPE/SPRING With this modification, the Oerlikon cannons were rearranged and their number was standardized at seven; four amidships and three in a heart-shaped mount on the fantail. Naval Historical Center Photo #: S-511-51-C. Scheme "B-V" The name "Gyrodyne" in its stylized // -->