I actually built this a while ago, but a viewer requested I post it since it was missing from PMC. This is basically a scaled down version of my typical warships, almost 1/3 the size of the Destroyer Mk II. In this version, the main cannon has been swapped for 2 "Long Arm" torpedo tubes. It also has bomb droppers and fire guns that can fire into every arc. It also has a very small hangar bay capable of holding a single small aircraft (included). 

This is a good warship for a server that doesn't have much processing power and can't handle the larger ships flying around. Or if you want a battle with lots of warships at once without lagging the server too much.  

For more information about Movecraft, the plugin that let's you fly these ships, click here: 
http://www.planetminecraft.com/mod/movecraft-reloaded---loraxe42s-fork/ 

You can use the fire guns and the bombs without the plugin, but you will need it to get the torpedoes to work.