Edit
Any type of ship specifically made for military combat uses.
Do not apply this tag on posts featuring personifications of warships (such as those from Kantai Collection or Azur Lane) simply because they have their riggings featured. Only apply this tag when the actual warship were present in the image.
See also
This tag implicates military_vehicle and ship (learn more).
The following tags implicate this tag: aircraft_carrier, battleship, cruiser, and destroyer (learn more).