Monitors are ships which are defined by the very high firepower compared to it's average mobility and usually small size. Monitors are usually seen in new players.
As these ships typically revolve around sheer firepower, they have armament comparable to heavier battleships, mostly heavy guns. They also may have torpedoes and mines, but these complement the main guns. Antiaircraft and antisubmarine weapons may be found as well. Generally, they are defined by sheer firepower and not by any particular weapon.
Roles and Usage
These are one of the simplest warships available. Since firepower goes pretty far, they could be employed for a variety of work, and can often take the place of a more powerful battleship in a pinch, though not as well as a proper battleship; they have a diverse range of use and can be very effective in combat against a variety of ships.