|The USN Thresher|
I have even created a variant of it called the Dervish. You can read the write up on the Thresher ship here.
The Dervish is still a work in progress and is far less bleeding edge than the first ship. You can tell that they were built on the same hull, but their operations are completely different. Owning to the fact that the Dervish does not have a unique and experimental engine, the hull is completely smooth.
|The USN Dervish Class|
8 domes are suitable for sensors, science experiments or in the case of the gun boat, weapons. There will be a lower deck, but is sparse on amenities. These are more like semi-optional palettes on an F-15, they contain consumables, with little space for moving around. Unlike the Thresher, the Dervish has no turret.
The search and rescue variant has airlocks on the aft domes and auxiliary thrusters on the fore domes. The test model mounts engines in the fore and aft compartments, which vent out the domes. For testing, instrumentation is mounted on the exterior.
I haven't designed the engines for the Dervish yet, but they will be powerful for a ship of it's size. They will extend the lenth of the ship by about 1/3.