Bridge tower
The KDY bridge tower is a distinctive element used across a vast number of KDY-originated starship classes. It's known properties allow new ships to be immediately scaled, although the towers are often very different in detail. They are a distinctive feature of Imperial Star Destroyers and many other ships in the Imperial Starfleet.
Design
The basic KDY bridge tower consists of a neck of varying height (sometimes so short as to be invisible) lifting a hexagonal 'bridge' above the dorsal superstructure. The upper surface of these towers almost always feature a pair of geometric spheres at either side and an H-shaped structure located centrally. The actual primary bridge - where the ship in question is usually commanded - is located centrally on the forward face of this hexagonal structure. The ship in question usually has auxiliary bridges in other locations.
Globes
The geometric globes atop KDY bridge towers have been the subject of controversy in the past.
H-structure
This structure (either raised or lowered, on different classes) is a part of the starship's FTL sensor system