An oil tanker, also known as a petroleum tanker, is a merchant ship designed for the bulk transport of oil. There are two basic types of oil tankers: the crude tanker and the product tanker. Crude tankers move large quantities of unrefined crude oil from its point of extraction to refineries. Product tankers, generally much smaller, are designed to move refined products from refineries to points near consuming markets.
Oil tankers are often classified by their size as well as their occupation. The size classes range from inland or coastal tankers of a few thousand metric tons of deadweight (DWT) to the mammoth ultra large crude carriers (ULCCs) of 550,000DWT. Tankers move approximately 2,000,000,000 metric tons (2.2×109 short tons) of oil every year. Second only to pipelines in terms of efficiency, the average cost of oil transport by tanker amounts to only two or three United States cents per 1 US gallon (3.8L).
The swift move by Iran’s Islamic Revolution Guards Corps (IRGC) to seize the two Greek oil tankers in the Persian Gulf waters, unanticipated by many, has created a tremendous buzz on social media ... Iran’s IRGC captures two Greek oil tankers in the Persian Gulf over violations, after the seizure of an Iranian oil tanker by Greece.
DUBAI/ATHENS - Iranian forces seized two Greek tankers in the Gulf on Friday, shortly after Tehran warned it would take 'punitive action' against Athens over the confiscation of Iranian oil by the United States from a tanker held off the Greek coast ... tanker over its Russian links.
Tehran's troops boarded two Greek oil tankers after Athens enabled the US seizure of an Iranian-flagged vessel. Iranian soldiers seized two oil tankers flying the Greek flag in the Persian Gulf on Friday, while Tehran protested the confiscation of one of its own vessels in Greek waters earlier this week, calling it US "piracy."
Government agencies said the oil spill occurred when bunker tanker MT Lefkas and the motor tanker Umnenga II were undertaking an oil transfer operation on Monday (May 23), an incident that prompted authorities to launch containment and extraction measures including the suspension of ship-to-ship transfers until further notice.
(Bloomberg) -- Iranian forces seized two Greek oil tankers in the Persian Gulf in apparent retaliation for the detention of vessel off the coast of Greece... The ability of tankers to move freely through the Persian Gulf is essential to the global oil trade ... (Adds information on one of the arrested tankers in fifth paragraph.).