(Updates to include additional information from Reuters analysis from eleventh to thirteenth paragraph.)
Tankers in and outside the Strait of Hormuz are maneuvering in anticipation of the waterway's reopening, set for Friday once a preliminary peace agreement, that precedes longer negotiations, has been signed by the US and Iran in Switzerland, Bloomberg reported Tuesday, citing ship-tracking data.
Shipbrokers have said that the number of empty supertankers anchored in the Gulf of Oman, outside out the Strait of Hormuz, has increased to about 60 this week, up from about three dozen earlier in the month.
Their proximity to the strait will reduce the time needed to pick up new cargoes and restore Middle Eastern hydrocarbons supply to importers.
Vessels linked to Iran's oil industry have also been on the move with several changing position ahead of the deal which would also end the U.S. naval blockade of its ports.
Two oil tankers bound for Africa made a U-turn in the Indian Ocean following the announcement of the draft peace deal this week, and changing their broadcast destinations to the Middle East, according to Bloomberg, citing shipping data.
Some of the ship diversions were observed as early as a few hours after the announcement of the peace deal between the two countries, with significant pent-up demand to meet in an energy market deprived of about 20% of the world's hydrocarbons supply since March.
Some shipowners are taking a more conservative approach, opting to observe what happens in the coming days before making plans to sail out of Hormuz. Those more willing to risk an earlier crossing will earn more from importers, Bloomberg said.
Some ships stuck inside the Persian Gulf since the start of the conflict appeared to be moving closer to Hormuz, with at least two bulk carriers, an LNG tanker and a container ship seen sailing eastward, possibly to join a cluster of vessels off Dubai, where they can obtain supplies and insurance.
Qatar, which suffered a major blow to its LNG business after strikes on its Ras Laffan production facility, is sending some LNG tankers back to the Middle East as it makes plans for a resumption of exports after a previous declaration of force majeure on shipments.
At least four empty LNG vessels Qatar owns have been heading back to the Persian Gulf region after idling or heading in a different direction, Bloomberg said, citing ship-tracking data.
Meanwhile, according to a Reuters report on Wednesday, citing shipping data, at least three tankers loaded with Iranian oil have passed through the US naval blockade this week, while another empty vessel is approaching the Gulf of Oman.
Two very large crude carriers, each loaded with 2 million barrels of oil each, have crossed the Gulf of Oman and are moving eastwards. The third vessel, loaded with 1 million barrels of oil, has also moved past the blockade and is on its way to Singapore. One of the VLCCs loaded cargo in late March, while the remaining two tankers were loaded in April, the report said.
The movement of these vessels suggests Iranian oil exports and could add to global supplies despite demand from biggest buyer China remaining weak due to low domestic margins, the report added.