A nickname for [[Kantai Collection]]'s [[naka (kancolle)|Naka]]. It comes from the resources you get from dismantling her: 2 fuel, 4 ammo, and 11 steel.  Since Naka is such a common drop in battle, or the typical result of a failed attempt to create a much more impressive ship, many players will reflexively scrap her every time they get her, leading to the nickname. Although to be exact, you actually get 2-2-10 from scrapping Naka alone, if one also scraps the gun a freshly dropped or constructed Naka comes with, you get 2 ammo and 1 steel to make the 2-4-11.

It also among the first [[meme|memes]] that came about from the Kantai Collection fanbase. 

Use this tag when the specified number of objects appear in the image, or some reference to the number 2-4-11 is made. Can also be used as a generic reference to dismantling Naka, but it [i]must[/i] be Naka who is the victim; no other shipgirl qualifies for this tag.
燃2弾4鋼11 2-4-11 恋の2-4-11