Three Saudi-owned very large crude carriers (VLCCs), the largest class of oil tanker, reactivated their AIS transponders in the Gulf of Oman on 19 June and moved or positioned roughly 10 million barrels near the Strait of Hormuz, the first Saudi tanker movement since the conflict began 1. AIS is the automatic tracking signal ships switch off to hide and on to be seen, so reactivating it is itself a public gesture. the strait still did not reopen.
The Lloyd's Market Association (LMA), the body that represents Lloyd's syndicates, said safety rather than insurance availability was suppressing traffic 2. The navigable channel remains uncleared, no minesweeping has been reported, and tracking data showed zero completed eastbound transits by Saturday 20 June. The movement reads as Gulf producers testing the water commercially, not as barrels flowing: the carriers approached a strait that has logged no foreign-flag transit since the war shut it , even after CENTCOM ended its blockade enforcement on 18 June .
Brent Crude, the global oil benchmark, held near $80 a barrel, little changed from its $78.66 close on 18 June , as the market priced the repositioning as a signal rather than a supply unlock 3. Roughly a fifth of seaborne oil normally passes through Hormuz, so a price that barely moved on the first tanker movement in months is the market saying the same thing the LMA did: until the mines are cleared, the barrels stay stranded in the Gulf of Oman.
