The Type 140 Jaguar class fast attack craft is an evolution of the German torpedo boats (E boats) of World War II. Sa'ar 3 class ("Cherbourg") is a class of missile boats built in Cherbourg, France at 
the Amiot Shipyard based on Israeli Navy modification of the German Navy's Jaguar class fast attack craft. "5.SG" means fast patrol boat squadron 5, Elster and Dommel are boats from these squadron.
אדמירל הנס פרנק צי גרמניה
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אדמירל הנס פרנק צי גרמניה