Starship Ilsa was the personal leisure cruiser of Admiral Delacour, named after his wife Ilsa Delacour.
The admiral had the ship built from his own personal funds. Gail Pilgrim described it as a "floating museum", and it contained a great many antiques and artifacts. It also had a large leisure area with a pool and an observation deck.
It was destroyed during the events of Space Pilgrim Academy: Year 3.