==================== Type: Ship stats Bug: You can't mount turrets in every slots of your ship and mount CAU6 at the same time due to too small cargo hold. Tried with Interloper, Bottlenose (likely Sturgeon too) and the Kusari gunboat. ====================
Yeah, this is a known issue and is fixed in the next patch by making the guns/shield no longer take cargo (they require 5 each, and 30 for shields for no particular reason).