On 18 April, the U.S. Navy attacked with several groups of surface warships, plus aircraft from the aircraft carrier USS Enterprise, and her cruiser escort, USS Truxtun.
The action began with coordinated strikes by two surface groups.

One Surface Action Group, or SAG, consisting of the destroyers USS Merrill (including embarked LAMPS MK I Helicopter Detachment HSL-35 Det 1) and USS Lynde McCormick, plus the amphibious transport dock USS Trenton and its embarked Marine Air-Ground Task Force (Contingency MAGTF 2-88 from Camp LeJeune, NC) and the LAMPS (Light Airborne MultiPurpose System) Helicopter Detachment (HSL-44 Det 5) from USS Samuel B. Roberts, was ordered to destroy the guns and other military facilities on the Sassan oil platform.
At 8am, the SAG commander, who was also the commander of Destroyer Squadron 9, ordered the Merrill to radio a warning to the occupants of the platform, telling them to abandon it.
The SAG waited 20 minutes, then opened fire.
The oil platform fired back with twin-barrelled 23 mm ZU-23 guns.
The SAG's guns eventually disabled some of the ZU-23s, and platform occupants radioed a request for a cease-fire.
The SAG complied.
After a tug carrying more personnel had cleared the area, the ships resumed exchanging fire with the remaining ZU-23s, and ultimately disabled them.
Cobra helicopters completed the destruction of enemy resistance.
The Marines boarded the platform, and recovered a single wounded survivor (who was transported to Bahrain), some small arms, and intelligence.
The Marines planted explosives, left the platform, and detonated them.
The SAG was then ordered to proceed north to the Rakhsh oil platform to destroy it.

As the SAG departed the Sassan oil field, two Iranian F-4s made an attack run, but broke off when Lynde McCormick locked its fire control radar on the aircraft.
Halfway to the Rahksh oil platform, the attack was called off in an attempt to ease pressure on the Iranians and signal a desire for de-escalation.

The other group, which included the guided missile cruiser USS Wainwright and frigates USS Simpson and USS Bagley , attacked the Sirri oil platform.
Navy SEALs were assigned to capture, occupy and destroy the Sirri platform but due to heavy pre-assault damage from naval gunfire, it was determined that an assault was not required.

Iran responded by dispatching Boghammar speedboats to attack various targets in the Persian Gulf, including the American-flagged supply ship Willie Tide, the Panamanian-flagged oil rig Scan Bay and the British tanker York Marine.
All of these vessels were damaged in different degrees.
After the attacks, A-6E Intruder aircraft launched from USS Enterprise, were directed to the speedboats by an American frigate.
The two VA-95, aircraft, piloted by "Lizards" Lieutenant Commander James Engler and Lieutenant Paul Webb, dropped Rockeye cluster bombs on the speedboats, sinking one and damaging several others, which then fled to the Iranian-controlled island of Abu Musa.

Action continued to escalate.
Iranian fast attack craft Joshan, an Iranian Combattante II Kaman-class fast attack craft, challenged USS Wainwright and Surface Action Group Charlie.
The commanding officer of Wainwright directed a final warning (of a series of warnings) stating that Joshan was to "stop your engines, abandon ship, I intend to sink you".
Joshan responded by firing a Harpoon missile at them.
The missile was successfully lured away by chaff.
USS Simpson responded to the challenge by firing four Standard missiles, while Wainwright followed with one Standard missile.
All missiles hit and destroyed the Iranian ship's superstructure but did not immediately sink it, so Bagley fired a Harpoon of its own.
The missile did not find the target.
SAG Charlie closed on Joshan, with Simpson, then Bagley and Wainwright firing guns to sink the crippled Iranian ship.

Two Iranian F-4 Phantom fighters were orbiting about 48 km (26 nmi) away when Wainwright decided to drive them away.
Wainwright fired two Extended Range Standard missiles, one of which detonated near an F-4, blowing off part o
On 18 April, the U.S. Navy attacked with several groups of surface warships, plus aircraft from the aircraft carrier USS Enterprise, and her cruiser escort, USS Truxtun. The action began with coordinated strikes by two surface groups.
One Surface Action Group, or SAG, consisting of the destroyers USS Merrill (including embarked LAMPS MK I Helicopter Detachment HSL-35 Det 1) and USS Lynde McCormick, plus the amphibious transport dock USS Trenton and its embarked Marine Air-Ground Task Force (Contingency MAGTF 2-88 from Camp LeJeune, NC) and the LAMPS (Light Airborne MultiPurpose System) Helicopter Detachment (HSL-44 Det 5) from USS Samuel B. Roberts, was ordered to destroy the guns and other military facilities on the Sassan oil platform. At 8am, the SAG commander, who was also the commander of Destroyer Squadron 9, ordered the Merrill to radio a warning to the occupants of the platform, telling them to abandon it. The SAG waited 20 minutes, then opened fire. The oil platform fired back with twin-barrelled 23 mm ZU-23 guns. The SAG's guns eventually disabled some of the ZU-23s, and platform occupants radioed a request for a cease-fire. The SAG complied. After a tug carrying more personnel had cleared the area, the ships resumed exchanging fire with the remaining ZU-23s, and ultimately disabled them. Cobra helicopters completed the destruction of enemy resistance. The Marines boarded the platform, and recovered a single wounded survivor (who was transported to Bahrain), some small arms, and intelligence. The Marines planted explosives, left the platform, and detonated them. The SAG was then ordered to proceed north to the Rakhsh oil platform to destroy it.
As the SAG departed the Sassan oil field, two Iranian F-4s made an attack run, but broke off when Lynde McCormick locked its fire control radar on the aircraft. Halfway to the Rahksh oil platform, the attack was called off in an attempt to ease pressure on the Iranians and signal a desire for de-escalation.
The other group, which included the guided missile cruiser USS Wainwright and frigates USS Simpson and USS Bagley , attacked the Sirri oil platform. Navy SEALs were assigned to capture, occupy and destroy the Sirri platform but due to heavy pre-assault damage from naval gunfire, it was determined that an assault was not required.
Iran responded by dispatching Boghammar speedboats to attack various targets in the Persian Gulf, including the American-flagged supply ship Willie Tide, the Panamanian-flagged oil rig Scan Bay and the British tanker York Marine. All of these vessels were damaged in different degrees. After the attacks, A-6E Intruder aircraft launched from USS Enterprise, were directed to the speedboats by an American frigate. The two VA-95, aircraft, piloted by "Lizards" Lieutenant Commander James Engler and Lieutenant Paul Webb, dropped Rockeye cluster bombs on the speedboats, sinking one and damaging several others, which then fled to the Iranian-controlled island of Abu Musa.
Action continued to escalate. Iranian fast attack craft Joshan, an Iranian Combattante II Kaman-class fast attack craft, challenged USS Wainwright and Surface Action Group Charlie. The commanding officer of Wainwright directed a final warning (of a series of warnings) stating that Joshan was to "stop your engines, abandon ship, I intend to sink you". Joshan responded by firing a Harpoon missile at them. The missile was successfully lured away by chaff. USS Simpson responded to the challenge by firing four Standard missiles, while Wainwright followed with one Standard missile. All missiles hit and destroyed the Iranian ship's superstructure but did not immediately sink it, so Bagley fired a Harpoon of its own. The missile did not find the target. SAG Charlie closed on Joshan, with Simpson, then Bagley and Wainwright firing guns to sink the crippled Iranian ship.
Two Iranian F-4 Phantom fighters were orbiting about 48 km (26 nmi) away when Wainwright decided to drive them away. Wainwright fired two Extended Range Standard missiles, one of which detonated near an F-4, blowing off part o
Operation Praying Mantis