The Royal Navy of Marleybone is an omnipresent force across the Spiral - the Queen's highest priority is her mercantile empire, which depends on the "wooden ships and iron Dogs" of the Navy for its very survival. Marleybone ships are stout and tough, and the Dogs are masters of tactics and gunnery.
With colonies in Skull Island, Darkmoor, and Krokotopia and trade agreements nearly everywhere else, protecting the flow of ships between colonies and especially through Stormgates is Marleybone's highest priority. Marleybone may not have the biggest fleet in the Spiral, but the Royal Navy is blessed with brilliant officers like Captain Gordon, The Commodore, and Admiral Nelson - their military genius more than makes up for any numerical disadvantage. Marleybone was eager to maintain her alliance with Monquista and Valencia, but both those friendships seem to be quickly unraveling.