This is an article of the ARK from Silver's time. You might be looking for Space Colony ARK.

The Space Colony ARK is a space station, formerly the home of Professor Gerald Robotnik, his granddaughter Maria, Shadow the Hedgehog and other scientists. In Silver's future, the ARK crashed on Mobius in the waters near Onyx Island, where it's been burning for many years. The ARK seems to have a large hole on the side of it, which might be the cause of its crash landing. (StH: #98 #124, #216)