She comin' up fast.
MOAR RPG BOATS?
The Pepper's Fleet, a mercenary navy commanded by "The Pepper" from his Yellow Submarine, is mostly made up of small ironclads (or some other shiny coppery brassy lookin' metal-clad) with steam engines. However, when the Pepper visits a battle... uh... "field", he travels in this Monitor/Virginia-inspired monstrosity.
The Helter Skelter is entirely "metal" (in quotes because I still don't know what it is) and has only 9 cannons. 9, big, heavy cannons mounted on a massive turret. The craft has shockingly poor maneuverability and decreased speed due to its heavy mass and low engine count.
Powered by an internal combustion engine, with exhaust pipes that... uh.. I failed to model. Damn. Let's say that it goes out one of the back windows.
What else... what else...
This is it for Beattles-inspired sea-craft, barring the possibility I come up with another. The ship was mostly inspired by the Monitor and Virginia, as I said, but as it came together, it got a certain Pyramid Head feel to it, heightened by the stigma surrounding the song Helter Skelter. It even sounds sinister, despite being a kind of twirly slide.
The engines, now that I mention it, are not in fact attached to the body. This is totally the software's fault, and I'm hoping someone can help me with it. I try to make a bridge between the engines and the engine stock, and Wings3d freezes up. It does this with many models, though I can't tell if it's due to the number of "objects" or the number of polygons.
Anything else, anything else...
Uh, pokey spine on the front for ramming other ships... probably would be carried to battle... um... scenes... by the larger submarine city... the engine is powered alchemically...
I guess that's it.

-I got blisters on my fingers.

Is the lance for illegal dolphin fishing?

wouldn't it be black and blue themed?
kekekeke, I was thinkin of the Blue-meanies

change the textures

We're all living in a yellow submarine...

It's pretty cool, but the turret on top looks silly. I'd try a different design, maybe based on modern battleships or something.

Good model, but it looks like some bananaboat now

Not bad. I do agree with the person who said the turret on the top looks a bit funny though. I wouldn't say scrap the entire design, but maybe modify or shrink it a bit? Also, wouldn't a bright orange hull make it easier for enemies to hit it?

Change the turret... well, maybe. I was thinking of reducing the number of cannons... but I'm probably gonna keep the overall look, to keep it close enough to the source material.
And as for the color... it's the same rationale behind the Red Coats and whatnot. If you read the descriptions of the fight between the CSS Virginia and the USS Monitor, before the Monitor showed up, there was no hope for the Union. It was total slaughter, and they couldn't put a frikkin' dent in the Virginia.
{EDIT}

...
OK, that's it, I'm gonna have to make another one.
Thanks a lot genk, Jesus Christ.

-I'm thinking... organic looking... perhaps an attack sub...

The monitor is an awful design for a war ship. It was only successful because the cannons on the old wood ships couldn't break through it's armor.

Instead of one huge turret with a **** load of guns, modern ships have lots of turrets with only one or two barrells each. This is for a good reason. Your ship, with just one turret, is ****ed if it's attacked by two or more enemy ships at once.

Exactly. Break all six of those barrels down into multiple cannons and the sailors will be alot happier.

I really like the overall design, though.

SCREW YOU, OK? IF YOU DON'T LIKE IT, YOU CAN GO TO HELL AND DIE.
Ok, to be honest, I thought about that while making it. Orignally, I was gonna have cannons out every window, as well as big ole steamstacks, or at least pipes that ran along the length of it, but they got in the way of the turret.
...
*sigh*
Fine.
Fine!

-You know, aside from the engines, this was the closest I've come to actually finishing a vessel in a while?