The Swordfysh is a mighty square-rigged galleon, antique in design but no less lethal for it. Around its hull are swirling designs of waves, razorshells and tritons, and upon its prow is a giant ram in the likeness of a saw-shark's blade. The Swordfysh's every timber and plank is engraved with symbols of the Seafather Manann; its sails fly the crossed tridents of the sea-lords, and its hundred-plus cannons are decorated with carefully placed barnacles and knotted latch-eels.
The Swordfysh is a pirate ship with a strong fishy theme with crown shells and teeth of sea monsters decorating the hull, seaweed pennants and the addition of a large fin in place of a rudder. Other defining details include Unicorn Whale horns on the masts, a ram made from a massive sea beast, and a Sea Giant skull figurehead with colossal jewels set in its eye sockets.
The iconography on the sails is also great and adds a lot more character to the ship, as well as the shark or other beasts swimming alongside. All put together it's obvious that it's a pirate ship but still fits in with the rest of the fleet.
Using brass rather than gold was definitely the right choice, it drops some consistency with the other ships but creates more of a gloomy pirate feel than bright gold would.
I was also careful with the black sails, as I wanted to add a lot of highlighting, but it's easy to go overboard and end up with a much lighter grey. With the ghostly icons I think it works together well and still looks dark but with a decent amount of highlights to bring out the 3D effect.
The cog was painted in the same way with a freehand fish as the symbol on the sail.