Submarine Combat Units

Submarine Combat Units (SCU) were units within the Grand Army of the Republic comprising clone troopers, known as scubatroopers, that specialized in underwater operations, specifically on worlds completely enveloped in water. Their armor was equipped with an oxygen tank that could last up to three days of constant use, a heads-up display capable of seeing through murky water (and detecting submersible droids), and repulsorlift-supported "flippers" which made swimming much easier; the armor was also capable of withstanding as much pressure as most modern submersible vehicles. The "scuba rifle" was a specially designed blaster that allowed a blaster bolt to remain intact underwater and did nearly twice as much damage as standard DC-series blasters.

The Republic hosted less than a regiment of scubatroopers across the galaxy, which were divided into battalions. The most notable detachment was Battalion A (SCU-BA, or SCUBA), which was temporarily attached to the 501st Legion during the Battle of Mon Calamari. Clone scubatroopers were the predecessors to the Galactic Empire's seatroopers (attached to the Imperial Maritime Forces), which were far larger in numbers.