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|Number of cells||13|
|Discovered by||John Conway|
|Year of discovery||1970|
The heavyweight spaceship (commonly abbreviated to HWSS) or (rarely) big fish is the fourth most common spaceship after the glider, lightweight spaceship and middleweight spaceship. It was found by John Conway in 1970 and travels at a speed of c/2 orthogonally. Its domino spark can be used to stabilize several tagalongs, including sidecar and half of x66. It is one of only three known spaceships that is a polyomino in any of its phases.
- Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- Heavyweight spaceship at Adam P. Goucher's Catagolue
- The 1 thirteen-bit spaceship at Mark D. Niemiec's Life Page
- 13P4H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs