[UPDATE] Iran targeted 24 ships in the Strait of Hormuz in two weeks, its most since the war began, by the FT's count

Britain's UKMTO shipping office counted six vessels attacked on Sunday, Oct. 11 alone; the previous two-week high was 13 ships, in early March.

Iran attacked 24 tankers and other vessels in and around the Strait of Hormuz in the two weeks to Sunday, Oct. 11, by the Financial Times' count from UKMTO and European security reports, the worst stretch since the U.S.-Israeli war on Iran began Feb. 28 (the next worst, early March, had 13). Iran's army also announced it has deployed units east of the strait, in the Arabian Sea and the Sea of Oman, the open water ships enter after leaving the Gulf. Sunday, Oct. 11. UKMTO counted six vessels attacked. The Joint Maritime Information Center's report that day details three tankers hit; a fourth ship, the Ocean Molica, was struck by U.S. forces, not Iran. Still open. The FT has not published a ship-by-ship list, so how many of the 24 were damaged, disabled or lost crew is not yet known.

PREVIOUSLY

Sept. 14 — An unidentified projectile hit an Iranian container ship off Hengam Island, killing one; Trump wouldn't say whether the U.S. fired it.
Sept. 20 — A hit on Saudi Arabia's East-West pipeline and a supertanker shortage began squeezing fuel supplies.
Sept. 23–27 — Iran offered to reopen Hormuz within a week if the U.S. lifted its naval blockade; Trump rejected it.
Sept. 30 — A Qatari compromise stalled; U.S. officials said major combat could resume after the Nov. 3 midterms.
Oct. 2 — Secretary of State Marco Rubio ordered Iran's UN delegation out of New York.
Oct. 8 — Congressional researchers counted 81 U.S. aircraft and drones lost or damaged, up from 42 in May.
Oct. 12 — Iran's security chief Mohsen Rezaei called the U.S. reply insufficient, said Tehran stopped responding, and threatened undersea cables and data centers.

What the three confirmed Oct. 11 tanker hits did, per the Joint Maritime Information Center:

One tanker lost power and had to be towed
One caught fire; the fire was put out
One took damage to its steering room and water tanks; all three crews reported safe