Cheops class warship

The Cheops class warship, also known as the Pyramid ship, was a type of starship used by the Goa'uld. Ra and Heru'ur were both known to own at least one of these ships.

History
In 1994, Jack O'Neill and Daniel Jackson destroyed Ra's Cheops class warship, along with Ra, using a naquadah-enhanced nuclear bomb, which Ra had been planning to send back to Earth through the Stargate.

Ra seems to have used the ship almost exclusively, using it even during his time on Earth. Heru'ur also had similar ships which used to invade Cimmeria and land on Abydos.

Behind the scenes
The footage of Heru'ur's ship landing on Abydos in "Secrets" is actually footage from the film, played backwards, of Ra's ship lifting off.