The Ha'tak-Class mothership was the primary capital ship used by the Goa'uld. A Ha'tak carries a sigificant arsenal of Heavy staff cannons for ship-to-ship warfare and orbital bombardment as well as serving as a carrier for dozens of Death Gliders while being able to service other spacecraft and carrying up to a thousand Jaffa warriors. Ha'tak class ships can enter planetary atmospheres. Cronus' Ha'tak had a speed of 32,000c.
The primary armament of a Goa'uld Ha'tak are it's heavy staff cannon turrets for ship to ship, these have been been given on screen a firepower of up to 200 megatons. Hat'tak also are equiped with a set of faster firing anti fighter staff cannon turrets.
A Ha'tak has an unusual design with a pyramidal core surrounded by an external framework. A Ha'tak-class ship is over six hundred meters across.
Normally a Goa'uld Ha'tak class ship has a large crew of Jaffa and Goa'uld technitions and overseers, although it can be operated to some degree with only a Helmsman.
Over the course of the Stargate franchise, several distinct varients on the Ha'tak design have displayed themselves. This does not include various superheavy flagships that the Goa'uld have built
The first of which was Ra's Mothership, which lacked the external framework standard to that of most Goa'uld Hat'aks. The general beleif is that this is because Ra's pyramid ship was not in fact a military vessel, but a sort of Personnal Yaught used by the most powerful of system lords to go about his domain.
After Apophis usurpted control of Sokar's empire a second varient was seen, an advanced prototype for a new and improved class of Ha'tak. The proformance of said ship is unknown, as SG1 destroyed it before its completion and no other craft of it's class that might have been under production could not be completed before Apophis's final Death.
Latter still, Anubis fielded a fleet of Improved Ha'tak class ships. These featured improved shield and weapons technology allowing it to take on a Asgard Beliskner-class spacecraft, although they could still be defeated by normal Ha'taks. These ships, unlike Apophis's prototype, were not specially built with improved systems, but rather were merely upgraded conventional Ha'tak class ships.