A fifth tanker was struck in the Strait of Hormuz since September 28, extending a rapid pace of attacks. UKMTO reports four attacks between October 1 and 4, all on the Omani side of the waterway, each vessel hit by an unknown projectile [1][3]. The latest victim, Lipsi, is a brand-new LR2 tanker linked to a Greek operator and Chinese owner; it sustained engine room damage on October 4 [2]. The previous week's victims included Kuwaiti VLCC KAZIMAH III on October 1 [2].

Most recent victims have been transiting AIS-dark, sustaining the dark-tanker shuttle that kept Gulf crude flows near 12 million bpd before these strikes [2]. Independent tracking data shows traffic suppressed to single-digit vessel movements in each direction, while US NCAGS data averaged about 32 transits per day over the prior 72 hours [3]. JMIC threat level remains SEVERE with four attacks in 96 hours [4].

Iranian Parliament Speaker Ghalibaf repeated October 4 that the strait will not reopen unless seven conditions based on the Islamabad Memorandum are met — a halt to US acts of aggression, end to the naval blockade, and release of Iranian assets [1]. Iran is reviewing Washington's seven-day proposal but parliament's security committee says negotiations are at a post-negotiations stage [3].

The insurance-based effective closure remains operative; independent oil passage through Hormuz is unconfirmed [1][2].