The W and Z class was a class of sixteen destroyers of the Royal Navy launched in 1943–1944. They were constructed as two flotillas, with names beginning with "W-" and "Z-", respectively, although, like the preceding U and V class, two of the flotilla leaders were named after historical naval figures (as had been Royal Navy practice during the inter-war years). They were known as the 9th and 10th Emergency Flotilla, respectively and served as fleet and convoy escorts in World War II. None were lost during World War II but INS Eilat (originally HMS Zealous) was sunk during the Israel-Egypt conflict in October 1967 by Egyptian missile boats.