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A Mongoose 2e design. The Caltrop-Class 35-Ton Robotic Mine is designed to be an inexpensive deterrent and is in widespread use supporting the system defense boat networks in many systems. Sporting basic stealth, the ability to move independently, and only needing refueling every five years, it can be deployed in swarms that will be an unpleasant surprise for intruders.
It has a small turret missile rack with a dozen ready missiles and a magazine with 132 more. It also has a fixed pulse laser to defend itself from counter missiles or to directly attack enemy ships. Costing MCr30 each, it is not a difficult sell any government to seed them by the hundreds or thousands.
Each comes with three Superior Robotic Mine Droids to pilot, perform gunnery, and do required maintenance. The robots, unlike the mine, are built at TL15 and come with the most powerful security software on the Imperial market today.