Spacehawk

Spacehawk is the first line of defense of the Terrahawks, patrolling the outer limits of Earth's atmosphere for any signs of alien intruders. At 16 hundred feet (533.3 meters) in length, the ship hosts a crew of 100 zeroids (50 on each side) to provide maximum firepower. These zeroids are kept in line by Space Sergeant 101, whom they are programmed to obey without question. The rest of Spacehawk's complement includes Hawklet and the MEV. Spacehawk can leave Earth orbit and travel to any planet in the Solar System within a day. Spacehawk is described as having artificial gravity, which allows for prolonged occupation by humans such as Hiro or Doctor Ninestein without the need for exercise to retain muscle mass. Personnel are transported between Hawknest and Spacehawk via Treehawk.

Trivia

 * Although Hiro is usually in command of Spacehawk, Doctor Ninestein has been known to take over operations in times of crisis. We can assume from this that Ninestein would handle Spacehawk if Hiro was on vacation.
 * In the Terrahawks annual, Spacehawk's gravity is described as being accomplished via centrifugal G-forces as it rotates, but Spacehawk is almost never seen rotating on screen.