R-Wing Starbomber
MOC by Roguebantha for an FBTB.net contest

Backstory.
Kuat of Kuat was a cautious man. Some would say prudent, others would say paranoid.
As the head engineer, financier and power behind the biggest shipyard in the galaxy he had to be. Kuat drive yards was his responsibility.
One of his many fears was an attack on his shipyards from the very ships he had overseen the construction of; the Emperor was rumored 
to want nationalization of the shipyards that created his massive triangles of destruction, the Imperial Star Destroyer. And if he wanted it 
Palpatine would take it. By force.
Of course Kuat had his own fleet of Capital ships, and his shipyards bristled with ion cannons and Turbolasers. But it was only a drop in 
the ocean compared to an Empire.

For generations uncounted the planet Kuat had mighty shipyards. It was what they did, who they were. So the explosives fitted throughout 
the orbiting superstructure were to be used as an absolute last resort. Kuat could not let the shipyard fall in to hands not born of Kuat. But 
he wanted another, less final last resort. The R-wing was designed to be that.

Inspired by noble tales of Rebellion fighter pilots attacking Star Destroyers and coming out on top he set his engineering mind to the task.

The R-wing was designed to take on the mighty Star Destroyers in a direct and deadly way. Its narrow profile and jamming equipment let 
it creep up unnoticed, and moving slowly it could push through capital ship particle shielding. Once through the wings swing up to improve
 maneuverability and to reveal some ordinance. If the new larger profile meant the ship was picked up on a sensor it needed to be able 
to defend itself against hull mounted lasers. To this effect a large pop-up ion cannon was installed to incapacitate the guns quickly, also 
mounted under each wing were three concussion missiles to take out stationary targets. Two nose-mounted lasers were fairly 
ineffective against such targets but would make harrying starfighters at least think twice. The main offensive weapon was a thermal 
bomblett dispenser. Flying low over the durasteel plates of its prey, almost scraping the surface, a wheel inside the circular part of the 
body would spin and deploy a dotted black line of explosives, this could be hundreds of meters long on a successful mission and once 
clear the pilot would press a big red button. Boom! Over multiple atmospheric containment areas and along hull weak points long gashes 
would suddenly appear, with luck and judgment a couple of runs could cripple a ship, take out critical systems and leave the stricken craft 
open to attack by more conventional strikes.
If anyone knew the weak points of an Imperial Star Destroyers it was Kuat of Kuat, and if the Empire ever decided to try its hand at shipyard 
procurement he would be ready.