As Karasu is "raven", and related to the Crow Nebula setting. It appears to me that a common name theme amongst the GMG shipline is lost along the way.
I suggest Daitengu (link) so at least it has some relation to the Karasu, but implies it's something larger.
Quote: With the increase of the Cretan presence in the sigmas, and the evermore violent Kruger raids in the Sigmas The Guild was forced to upgrade its already potent snub craft. Pouring every ounce of Money and Technology the guild had at its disposal, the [SHIP NAME] was created. State of the Art electronic systems and built in Gas Survey units plus life support systems allows this ship to be both an effective combat vessel as well as a deep space survey unit, to search out new Helium-3 deposits
Will be writing up another one. Maybe making it Wrecker like a weird Transport gunboat hybrid.