Rocket-Ship
The Montbayern Rocket-Ship is a twist upon the design of the Barisean battleship, currently implemented in several experimental versions. The Rocket-Ship is essentially a steam-powered ironclad, but instead of the standard capability of cannon barrage capability, the Rocket-Ship sports a singular cannon, of massive size. This allows it to propel cannonshot at unprecedented speeds, capable of tearing even enemy ironclads apart, while lowering the weight of a cannon stockpile on board. In turn, this allows the usage of heavier cannonballs, further increasing the ship's deadliness.
The Rocket-Ship is not seen as a serious threat by Barisea, as the two nations have a wonderful relationship, but it could rival its sea-faring cousin's ships should their friendship every deteriorate.