Tree class overview
The Tree class crude oil tankers are a mainstay of BP's company-operated fleet
The ships of this class bear the names of trees, and are among the most modern vessels in the industry. Their significant size and cargo capacity places them in the internationally recognized shipping group known as Aframax, which generally denotes a vessel of from 80,000 to 120,000 tonnes deadweight. Aframax, an acronym for "average freight rate assessment maximum," denotes a category of efficient crude oil tankers that can economically transport a significant amount of cargo. Cargo aboard a Tree class tanker typically will include either crude oil or fuel oils.
In keeping with the BP Shipping objectives of clean seas, safe ships and commercial success, these vessels have double-hull construction and the most modern navigation and handling equipment, operated by well-trained crews. All of the ships of this class were built in Japan by Tsuneishi Shipbuilding Company Limited. All are British-flagged, with Douglas, Isle of Man as their port of registry, and their classification society is Lloyds Register. BP operates these ships, providing its own crews and provisions. They operate worldwide.