Dreadnought

Dreadnought Dreadnoughts were rare and immense spelljammers used by mind flayers. They were a variant of the nautiloids, their more commonly used ships.

Description
Similar to nautiloids in design, a dreadnought consisted of two large nautiloid hulls upon which a gigantic snail shell rested on its side. One of the hulls was used for the command stations and the other for battle and ramming.

A typical dreadnought had a crew of 25 mind flayers. It could support up to 90 creatures without compromising its air supply.

The dreadnought was the product of research on the capabilities of the pool helm, which was capable of powering ships weighing over 50 tons (45 metric tons).

History
In the late 15 century DR, when nautiloids had become increasingly rare, an exceedingly small number of mind flayer colonies still had access to this large vessel. The dreadnoughts were employed as mobile lairs that the colony could use to engage in hit-and-run raids. For that reason, colonies that had access to these immense ships were much more aggressive than usual. To protect themselves from enemies, these colonies usually made their lairs in mountaintops or submarine locations, but could also just remain constantly flying, safe from raids in high altitudes.