The MOTHERSHIPS are massive, mobile bases for PREDATOR hunters. They are totally independent craft where a number of smaller ships can dock. These ships rarely enter conflict with another force, and are usually inhabited by a single clan, led by the clan Elder. Like other Yautja craft, they utilize cloaking devices which are sensor-invisible, making them virtually impossible to find. Pilots of other Yautja vessels, however, can use their vessel's standard beacons to locate a nearby Mothership. Here, warriors can battle for respect and acquire new weapons and devices. Most motherships also have a trophy case in which its clan's trophies are put on display.
They are fully equipped with scout ships and insertion pods, capable of lauching a Hunter onto a planet's surface and sending smaller scout ships onto hunts. They also come with powerful beam weapons, powerful enough to punch a hole from the orbit of a planet down to the deep crust. They also have two versions of self-destruct devices, one that detonates in a massive thermonuclear explosion, and another that implodes the ship, removing all trace of its existence.

~AVPwiki.

Additional Notes

I am resizing my original Predator mothership to be a little more size accurate, and this model should actually be able to fit the rooms I've designed.
Once I've finished resizing it, I will do some touch ups, increase the accuracy as well as the overall smoothness of the model.
It will be exactly twice as large as my original.

I expect it to be finished within the week, but I offer no guarantees, Enjoy. :)

*Update: The structure is 100% completed! Touch ups, alterations, and interior additions are all that is left to complete.
Note: Model is no longer Zeppelin mod compatible, as it is far too large for really any computer to try and fly around.

*Update(7/26/122): I'm including a schematic file download for those that have been asking for one. Being that it is not yet entirely completed, I might recommend exploring it on creative mod, because accessing some of the rooms in the back of the ship might require the ability to fly.
Hope you enjoy the fruit of my extensive labors; feedback is very much appreciated.

Cheers.

My completed original model can be found here.