The Kerigass Class Dreadnought was a line of warships built and fielded in the days following the end of the Middenian Great War. It was used to combat Raulian Loyalists in their northern strongholds, and was uniquely suited to doing so. The Kerigass is not only a surface warship, but is capable of submerging itself and acting as a submarine, and also is able to act as a ground-combat vehicle, with legs unfolding from doors on its hull, allowing it to walk, albeit slowly, across hard terrain.
More info will come with the finished model, I'm having quite a time designing the legs.