Tehran. Four vessels have transited the Strait of Hormuz since last night. According to BBC tracking, a total of four ships have exited the region since the US Central Command (CENTCOM) imposed a blockade.Activity in the region is being closely monitored after CENTCOM announced a blockade on all maritime traffic entering and exiting Iranian ports starting Monday. Following a statement issued by CENTCOM on Sunday night at 21:52 BST, vessel tracking data provided by MarineTraffic showed four ships crossing the Strait of Hormuz.All the vessels that crossed are reported to be tankers, which typically carry oil, gas, or chemicals. Preliminary...