Strait of Hormuz transit remains near a standstill for a sixth day, with Iran-linked tankers the only large vessels making the crossing in the past 24 hours.
During the observed window, one Iran-linked supertanker departed the Persian Gulf, according to vessel-tracking data.
In the opposite direction, one liquefied petroleum gas carrier entered. Both ships are sanctioned by the US.
Traffic through the Strait of Hormuz, a vital energy artery, has effectively flat lined following several attacks on merchant ships. Missile and drone activity continues to pose a critical risk to all vessels in the vicinity.
The inability to move oil tankers into and out of the Gulf means storage tanks are filling, and some refineries have cut capacity. Iraq has been forced to scale back production, and Kuwait has reportedly followed while Saudi Arabia is rerouting exports to terminals in the Red Sea.
By Friday, there were just nine empty supertankers in the Gulf, tracking data shows.
Almost seven per cent of global fertiliser exports, close to six per cent of precious metals,5.3 per cent of aluminum and aluminum products and 4.4 per cent of cement and other non-metallic minerals are shipped out of Persian Gulf ports and are at risk of disruption.
Bloomberg