Ships transiting Hormuz via the Oman coastline usually have flying bridges high up and have people standing watch with high powered optics. The straight is only some 30 miles wide, but most vessels are transiting via a very narrow corridor. They're passing within miles of each other. A lot of the transits are made at night, in the dark, with running lights and AIS off. A ship getting struck and being set on fire is VERY obvious.