The known Chig Transports are of intermediate size, larger than an ISSCV but considerably smaller than a Earth Freighter?. Larger ships may exist but have never been seen. Two types of transports are known.
These have been seen carrying humans (thirty plus) away farther into Chig space and operating in support of Chig positions (carrying unknown cargo). Once the area is threatened these ships retreat which suggests yet another craft is used in front-line areas.
This craft has only been observed once, carrying a Chig ambassador to peace talks onboard the USS Saratoga. The craft itself was captured after the death of it's pilot. Although it can be flown by a solo pilot the craft's capacity is unclear. It does appear to be smaller than the other observed Transport, only slightly larger than an ISSCV.