RNS

RNS, for Royal Naboo Ship, was the ship prefix used for starship of the Royal Naboo Security Forces. One of those ships was the RNS Queen Amidala IV.

Behind the scenes
This prefix is inspired by the national ship prefixes used by some real-world navies. A famous example is the prefix HMS (Her Majesty's Ship) which precedes the names of ships of the British Royal Navy.