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Boat image
Pattern type Strict still life
Number of cells 5
Bounding box 3×3
Discovered by JHC group
Year of discovery 1970

The boat is the only still life with 5 cells and was discovered by the JHC group in 1970.[1]

The boat can be hit by a glider to cleanly produce another glider, travelling perpendicular to the direction of the input glider. It is thus a one-time reflector.


The boat is the fourth most common still life in Achim Flammenkamp's census, being slightly less common than loaf and over four times as common as tub.[2] It is also the sixth most common object on Adam P. Goucher's Catagolue.[3]

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 18, 2009.
  2. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  3. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

  • Boat at Eric Weisstein's Treasure Trove of Life
  • Boat at the Life Lexicon
No corners (barges) (^-1) • ^0^1^2^3^4^5^6^7^8
One corner (boats) (^-1) • ^0^1^2^3^4^5^6^7^8^9^10
Two corners (ships) (^-1) • ^0^1^2^3^4