Here is my new widow-maker-orphan-slayer-kitten-eater airship. It is built on the base of one of the first ship I ever made , the pangolin class destroyer, and it has something more : A long range artillery arrows shotgun cannon (it's the strange thing you can see on the ship) It's a kind of tnt cannon wich can propulse dozens of arrows far away, on what you want's head ans basically kill it. It's even funnier with zeppelin mod, 'cuz you can move it where you want and slay who you want with your arrows barrage. yeepee !
It can get even funnier with the risugami's elemental arrows mod, which allows you to shoot fire arrows, with it you can burn all of these freaking testificate villages.
How does the cannon work ?
What a rellay good question, myself, To make the usage of the cannon easier I put signs everywhere to explain you what to do.
Just in case you are an anti-signs racist:
find the trench in the cannon
put water in the last bloc on the left
put tnt in all bloc with a sign
shoot arrows on the piston plate with a sign for a better range (the place you shoot the arrow actually affect the range of the cannon, I'll xplain that when I have time)
When you whot enough arrows, go the the shelter and push the button
when tnt will explode you will lost 1/2 heart if you are in the shelter
Then do it again for more flying arrows everywhere
This version is "manual loading", the ship wasn't big enough for the automatic reload system. Maybe on a next ship
If you want to use it with zeppelin mod, remove water first, and never try to use the cannon while the ship is a zeppelin mod's entity (or you'll simply be blown up)
Have fun with my new invention, I've learn how to build these cannons here :http://www.youtube.com/watch?v=BY-1_IjlqG4&feature=watch_response
I am aware that the ship does not look good but it's because the enormous cannon I've put on it. A new and prettier version will be made soon
And for them who didn't understand my explanations, I'll add some with the pics
Have fun ! ;)

Additional Notes

Compatible with zeppelin mod, just remove water before flying, and make the ship rejoin world before shooting