Tanker - online puzzles

A tanker (or tank ship or tankship) is a merchant vessel designed to transport or store liquids or gases in bulk. Major types of tankship include the oil tanker, the chemical tanker, and gas carrier. Tankers also carry commodities such as vegetable oils, molasses and wine. In the United States Navy and Military Sealift Command, any type of tanker used to refuel other ships is called an oiler.