page_title: Tank locomotive
hierarchical_section_title: Tank locomotive
caption_attribution_description: English: J1 class lomotive as built
context_page_description: A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of a more traditional tender. A tank engine may also have a bunker to hold fuel.
  There are several different types of tank locomotive, distinguished by the position and style of the water tanks and fuel bunkers. The most common type has tanks mounted either side of the boiler. This type originated about 1840 and quickly became popular for industrial tasks, and later for shunting and shorter distance main line duties.
  Tank locomotives have advantages and disadvantages compared to traditional tender locomotives.
context_section_description: A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of a more traditional tender. A tank engine may also have a bunker (or oil tank) to hold fuel.
  There are several different types of tank locomotive, distinguished by the position and style of the water tanks and fuel bunkers. The most common type has tanks mounted either side of the boiler. This type originated about 1840 and quickly became popular for industrial tasks, and later for shunting and shorter distance main line duties. 
  Tank locomotives have advantages and disadvantages compared to traditional tender locomotives.
caption: LB&SCR J1 class
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