A class 4 probe was a probe used by the Federation Starfleet and the Lyran Starfleet to conduct close-range scientific research.
The Stoneship (BC-347) deployed a class 4 probe to investigate the wormhole through which pirates escaped. (Star Trek: The Stoneship Files: "Chronicles of Taladu")
External link[]
- Class 4 probe article at Memory Alpha, the canon Star Trek wiki.