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18 APRIL 1988

A few minutes after delivering a radio warning, the destroyers of Surface Action Group Bravo open fire on the Sassan oil platform, which was being used by Iranian forces as a command-and-control center for attacks on Gulf shipping.

The ships of Surface Action Group Charlie open fire on the Sirri oil platform, which is being used to control Iranian maritime attacks.

Twin-rotor CH-46 helicopters deliver U.S. Marines to the Sassan platform, where they collect intelligence and set demolition charges. Plans are scratched to send Navy SEALs to the Sirri platform, which was set afire by the bombardment.

A pair of Iranian F-4 fighters approach the cruiser Wainwright, which chases them off with a pair of Standard missiles.

The Iranian patrol boat Joshan ignores radio warnings and approaches SAG Charlie. About 45 minutes later, Joshan fires a U.S.-made Harpoon missile — the remnant of a pre-Revolutionary arms purchase by the Iranian shah. Some 13 miles away, the U.S. ships fire chaff and dodge the incoming weapon. They return fire with Harpoons and Standard missiles, sinking Joshan in the world’s first missile duel between warships.