At exactly 2:23 a.m. in the Strait of Hormuz, the Iranian Kilo-class submarine Yunes (Hull 901) initiated a kinetic engagement against the USS Gerald R. Ford (CVN-78)—an incident demonstrating the lethal disparity between asymmetric ambition and integrated carrier strike group (CSG) defense architectures. While the Yunes utilized its 'Black Hole' acoustic signature to stalk the $13.3 billion carrier for 31 hours, the deployment of two Type 53-65 wake-homing torpedoes triggered a multi-layered defensive response that resulted in the total loss of the Iranian vessel and two escort frigates.
This is the technical breakdown of how the AN/SQQ-89A(V)15 undersea warfare system identified the threat 36 minutes prior to launch, why the $35,400-per-hour operating cost of the P-8A Poseidon proved a decisive investment in maritime domain awareness, and how the Mark 54 Lightweight Torpedo achieved a catastrophic hull failure in under ten minutes. You will discover why the 1-to-10,230 defensive cost ratio favors the US Navy despite the low cost of Iranian ordnance, how the SLQ-25C Nixie decoy successfully seduced wake-homing guidance systems, and why the subsequent mission-kill of the IRIS Jamaran and IRIS Damavand redefined regional surface warfare expectations.
Inside this tactical engagement analysis:
• USS Gerald R. Ford (CVN-78): 100,000-ton nuclear carrier, EMALS catapults, $13.3 billion valuation
• Yunes (Hull 901): Project 877EKM Kilo-class, diesel-electric, 533mm torpedo tubes
• Detection Phase: AN/SSQ-53F DIFAR sonobuoy grid deployment at 1:47 a.m.
• Engagement Geometry: 40-meter depth intercept, 45-knot torpedo velocity, 900-foot decoy trailing
• Countermeasure Architecture: SLQ-25C Nixie and AN/SLQ-61 LASSO broadband jamming
• Kinetic Response: Mark 54 MAKO torpedo impact at engineering section, 96.8-lb PBXN-103 warhead
• Strategic Impact: Destruction of Yunes, mission-kill of 2 Moudge-class frigates, zero US casualties
Technical Systems Covered:
• Type 53-65 Torpedo: Soviet-era thermal wake-homer, 45-knot top speed, $80,000 unit cost
• Mark 54 MAKO: Lightweight torpedo, active/passive sonar homing, $1.2 million unit cost
• AN/SQS-53C Sonar: Hull-mounted array, integrated with CSG-12 defensive perimeter
• RGM-84L Harpoon Block II: Sea-skimming anti-ship missile, 537 mph terminal velocity
• P-8A Poseidon: Multi-mission maritime aircraft, AN/APY-10 radar, acoustic processing suite
• Moudge-class Frigate: 1,500-ton displacement, Noor anti-ship missile equipped
This engagement proves that tactical stealth is insufficient against networked sensor fusion. The failure of the Yunes to detect the P-8A’s sonobuoy grid allowed the USS Ramage to dictate the terms of the undersea battle long before the first torpedo was fired. By the time the Mark 54 warhead detonated at 2:32 a.m., the Iranian submarine’s pressure hull had already been compromised by the US Navy’s superior situational awareness and rapid kill-chain integration.
Learn why the $160,000 Iranian investment in wake-homing technology was neutralized by a $47 million defensive architecture, how the 24-second reaction window for Moudge-class frigates proved insufficient against Harpoon Block II missiles, and why the recovery of Yunes’s cryptographic hardware provided a generational intelligence windfall for the Fifth Fleet.
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Related Topics:
∙ Yunes Kilo-class destruction
∙ CVN-78 defensive protocols
∙ Wake-homing torpedo countermeasures
∙ Mark 54 MAKO performance data
∙ Strait of Hormuz naval engagements
∙ P-8A Poseidon ASW doctrine
∙ Moudge-class mission-kill analysis
∙ AN/SQQ-89A(V)15 system integration
∙ Asymmetric naval cost-benefit ratios
Tactical Maritime Analysis provides technically accurate breakdowns of naval operations, equipment failures, and the strategic realities of modern littoral combat.
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