Tankers can range in size of capacity from several hundred tons, which includes vessels for servicing small harbours and coastal settlements, to several hundred thousand tons, for long-range haulage. Besides ocean- or seagoing tankers there are also specialized inland-waterway tankers which operate on rivers and canals with an average cargo capacity up to some thousand tons. A wide range of products are carried by tankers, including:
Tankers are a relatively new concept, dating from the later years of the 19th century. Before this, technology had simply not supported the idea of carrying bulk liquids. The market was also not geared towards transporting or selling cargo in bulk, therefore most ships carried a wide range of different products in different holds and traded outside fixed routes. Liquids were usually loaded in casks—hence the term "tonnage", which refers to the volume of the holds in terms of how many tuns or casks of wine could be carried. Even potable water, vital for the survival of the crew, was stowed in casks. Carrying bulk liquids in earlier ships posed several problems:
The suspected hijacking of a ship in the Gulf of Oman has ended and the vessel is safe, a UK maritime security agency said on Wednesday, days after a deadly attack on a tanker in the region ... the endangered ship as the Panama-flagged AsphaltPrincess, an asphalt and bitumen tanker.
LONDON (AFP) - The suspected hijacking of a ship in the Gulf of Oman has ended and the vessel is safe, a UK maritime security agency said on Wednesday (Aug 4), days after a deadly attack on a tanker in the region ... the Panama-flagged AsphaltPrincess, an asphalt and bitumen tanker.
Men who boarded and seized a ship in the Gulf of Oman have left the vessel and all those remaining on board are safe, officials say ... The bitumen tanker was seized on Tuesday heading into the congested approach to the Strait of Hormuz. It is not clear who seized the ship, but analysts suspected Iranian forces.
The British Navy reported the 'potential hijack' of a ship off the coast of the United Arab Emirates on August 3, days after a suspected Iranian attack on another tanker left two dead ...PrimeTankers, was hijacked by heavily armed forces who ordered the ship to sail to Iran.
The group of armed men who seized an oil tanker off the coast of the United Arab Emirates have now left the ship, the British Navy has said ... It remains unclear who was behind the attempted hijacking or what ship was being targeted ... The vessel was believed to be the Panama-flagged tanker AsphaltPrincess.
Iranian authorities continue to accuse the western powers of “creating a false atmosphere,” while also denying earlier reports that Iran was responsible for the attack on a Japanese tanker managed by an Israeli company last week that killed two people, the captain and a security officer aboard the ship.