There exist very few indicators of the performance characteristics of star destroyer propulsion systems. It is abundantly clear that the linear acceleration of an Imperator-class vessel exceeds that of the Millennium Falcon: the destroyer always outruns the freighter in a straight-line chase. Hangar defences: Two visibly large and important ventral turbolasers are mounted just beyond the forward lip of the primary docking bay of the ISD-I design. The Mandel plans definitely precede the recent «Imperial-class» referencing.
The symmetry of the tracks hints that there might be two pincers, but at least one is always hidden. Each is about forty metres across and bears what seems like a small parabolic dish about twenty metres in diameter. Unlike dimensions quoted for some other important warships of the Imperial Starfleet, this length is not in serious dispute. Star Wars Technical Journal, vol.2, p.17 … to rendezvous at Dankayo and reduce the tiny base to molten slag. The blueprints of Geoffrey Mandel are rare but official publications predating the second-generation products which were initiated with the game references of West End Games.
Imperial Star Destroyers have so thoroughly blasted Dankayo that I fear for my safety, even in this deep-planet survival shelter. They are given the label «axial defence turret» in STAR WARS Incredible Cross-Sections. Cut-away star destroyer production sketch and blueprints for A New Hope. In this undersized version, each gun turret has only two barrels, and there are only six of the heavy turrets on the whole ship, rather than eight. Both the asteroid and the tower were obliterated.