Jaco's spaceship is a space ship he received from the Galactic Patrol after taking out Frieza.
Video Game Appearances
In Dragon Ball Xenoverse, Jaco's spaceship is transported to Toki Toki City by the Supreme Kai of Time to train the Future Warrior, however Jaco ends up crashing it forcing him to remain in Toki Toki City until he can repair it. The Future Warrior can help by collecting Hercule Badges (which are made of precious medals needed to fix Jaco's ship) by defeating other Time Patrollers during Jaco's Training.
In Dragon Ball Xenoverse 2, inside the Time Rift anomaly that forms around Satan House, Jaco becomes stranded on Earth when his ship is once again damaged, forcing him to assist the Saiya Squad in combating various threats in exchange for them promising to assist him in finding parts of his ship. The Future Warrior (Xenoverse 2) working as Saiyaman 3 can join Jaco and the Saiya Squad in fighting for justice and help Jaco recover the missing parts from his ship. Additionally, a miniature model of Jaco's Spaceship may randomly appears as one of the possible vehicle models that appear on a dresser near the front door inside Kame House that changes when the Future Warrior enters Kame House.