When the Six Day War broke out, the Israel Navy was in the midst of the process of replacing its old craft with new ones. The Navy was thus forces to use its antiquated equipment to defend Israel’s coastline, and to attack enemy craft and their bases. Though Arab countries enjoyed a quantitative superiority in naval assets and equipment. They did not attempt to interdict Israel’s sea lanes, and in those cases where they tried to approach the Israeli coastline, they were forced to retreat in the face of the Israel Navy.
The Israel Navy operated in two theaters, the Mediterranean and the Red Sea. In the Red Sea, the Israel Navy took Sharm-e-Sheik, at the southernmost point of the Sinai peninsula.
One of the immediate results of the Six Day War was the addition of 800 km of coastline, which increased five-fold the area which now had to be protected by the Israel Navy.