Heavyweight spaceship

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Heavyweight Spaceship
3b2o$bo4bo$o$o5bo$6o! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]]
Pattern type Spaceship
Number of cells 13
Bounding box 7×4
Direction Orthogonal
Period 4
Mod Unknown
Speed c/2
Heat 19
Discovered by John Conway
Year of discovery 1970

The heavyweight spaceship (or HWSS for short, or 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.


The HWSS is the thirty-fifth most common object on Adam P. Goucher's Catagolue.[1]

Image gallery

The Heavyweight spaceship eaters
  1. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

See also

External links

  • 13P4H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs