Individual planets are deemed 'too insignificant' for the Imperial Navy to worry about unless otherwise ordered by Imperial Command.

Unlike the Old Republic Navy, the Imperial Navy is not required to answer an emergency call from a local government. The Imperial Navy is broken down into four key branches: the Line Branch handles strategy and administration, the Flight Branch handles combat vessel flight operations, the Fleet Support Branch handles vessel maintenance and repair, and the Service Support Branch handles the supplies and services that allow naval personnel to carry out their jobs. The huge shapes of Star Destroyers and the simple shapes of TIE Fighters became the identities of the Imperial Navy, which controlled planets, systems, and sectors through fear of attack as much as sheer numbers. While the stormtroopers became the visible aspect of the Imperial Military, it was the Imperial Navy that helped secure the early safety of the Galactic Empire. At its peak, it fielded millions of warships, logistics vessels and fighters, maintaining Imperial control throughout the galaxy. The Imperial Navy, also known as the Imperial Starfleet, Imperial Fleet, Imperial Battlefleet, or Imperial Space Service, is the naval branch of the Imperial Military of the Galactic Empire.

Star wars imperial navy structure