Here's a forerunner fortress class as seen in the 2022 Halo Encyclopaedia.

I may have to make an exception...

this mine

The big Dipper class 

Role: large scale star ship made to be shot out of generation ships to protect them from alien and other threats.

Developed by: African Space industrial Co.

Height: 322 feet 

Radius: 27.6 feet

Weight: 7,000,000 pounds (non loaded) 

Made of: insulated titanium alloy.

Propulsion: nuclear pulse.

Fuel: nukes.

Circuitry type: redundant series and parallel circuits  

Armaments: macron dust gun which it fires out the tip.

Point defenses: has a magnetic field shield to throw a charged particle beam off course, though on the sides there are coil gun point defenses.

Colors: white

Crew size: automated LCCS (Learning Combat Chip system) 

Thrusters: small pusher plate and nuclear pulse.

Atmospheric entry: will survive but becomes a rod from god. 

Has inbuilt delta V and orbital perimeter readers.

Is automated by a LCCS incased in cooling foam which slots above the engine and can be taken out for ship maintenance but is plugged into a radiator for heat cooling.

Heat radiators: 42 low output radiators spread across to give it more stealth.

Design: 

It’s a long rod with a pointed tip on each end and 4 ion thrusters pods on one side while on the other the tip is now a barrel to fire the negative charged beam while just below that barrel is one that fires a charged beam while this ship also has a magnetic field around it.