The Israeli naval command had reached the conclusion by the early 1960s that their old
Second World War-era
destroyers,
frigates and
corvettes were obsolete and new ships and vessels were needed.
Yitzhak Shoshan, later to command the destroyer
INS Eilat at the time of her sinking, surveyed the available
torpedo boat designs and recommended the German . The Israeli Navy asked
Lürssen, the shipyard which built the
Jaguar class, to modify the wooden
Jaguar-class design by switching to steel construction, adding to the length, and revising the internal compartmentalization. Due to
Arab League pressure on the German government, this plan was not continued and a new builder was sought. The Israeli Navy discovered that the Cherbourg-based
Constructions Mécaniques de Normandie owned by
Félix Amiot had experience building patrol boats in cooperation with Lürssen and would build the boats, based upon the German designs and plans. The engines were imported from Germany. The project received the code name "Falling Leaves" (). After the last 5 built were placed under embargo by the government of France, they were retrieved in the
Cherbourg Project. == Operational history ==