This template is used to add an eight-digit ENI number to a ship article's infobox, and to add the article to Category:ENI Number.
This template is intended to be used in the |Ship identification=
field in ((Infobox ship career)).
The only parameter in the template is the ship's ENI number:
((ENI Number|########))
Example: for the article on MV Spirit of Chartwell, ((ENI Number|07001842)) results in ENI number: 07001842.