Same reason as any ships floats - the weight of the water that the hull can push aside is greater than the weight of the ship.
Pipelines, Oil tankers (Ships), Oil Drums, Road Tankers.
oil tankers are dangerous to humans by the pollution of the environment
The Exxon Valdez was bound for Long Beach, California, hit Prince William Sound's Bligh Reef (Ran aground).She did not lose all of her oil, the grounding tore a hole in the ship's hull, and spilled an estimated minimum of 40.9 million litres of crude oil.This incident forever changed the Maritime Industry,because it resulted in Marpol (Marine Pollution) and IMO (International Maritime Organization) to enforce the mandatory Double Hull for Tankers. They further enforced this by imposing a Phase Out for Single Hull Oil Tankers by 2010. Meaning that all Single Hull tankers by 2010 will be either converted to FPSO's (Floating Production Storage and Offloading), or bulkers, or the more expensive conversion to double hull, or as a last resort Scrapped in India, Bangladesh, Pakistan, or China.
with oil
no........
Oil tankers do not sail near Antarctica: it's not on the way to or from anywhere where oil is transported.
Any kind; tankers carry crude oil and oil products. Tankers that carry oil products are often called product carriers. Specialist tankers carry vegetable oils, sewage and water. Not all at once of course!
Most large oil tankers simply carry the oil from one port to another or from an offshore installation to a depot.
trucks.. =]
25000
The Straight of Hormuz allows oil tankers to enter and leave the Persian Gulf.