Coe ship

Coe ship
14b2o$o7bob4ob2o$o7bo2b5o$8bo3b3o$2bo$2bo$12b4o$11bo3bo$15bo$11bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 600 ]]
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Pattern type	Puffer engine Spaceship
Number of cells	28
Bounding box	17 × 12
Direction	Orthogonal
Period	16 (mod: Unknown)
Speed	c/2 | Unknown
Heat	38.0
Kinetic symmetry	Unspecified
Discovered by	Tim Coe
Year of discovery	1995
Glider synthesis Fewest gliders 8 Uploaded synthesis RLE coeship_synth.rle
Pattern files Plaintext coeship.cells RLE coeship.rle

The Coe ship is the fifth most common spaceship after the heavyweight spaceship. It was the first period-16 c/2 orthogonal spaceship to be discovered; by Tim Coe in October 1995. It works as a puffer engine because it produces a long spark behind it as it moves.

Despite its small size, it never appeared in a soup until 2015 when apgsearch was devised. By doing so, it became the first naturally occurring non-period-4 spaceship to occur in Life out of an asymmetric random starting pattern. A second Coe ship appeared in June 2016. This makes it the fifth most common naturally-occuring spaceship that is not a flotilla. However, the Schick engines and the copperhead have appeared in symmetric soups.

Image gallery

Just a few of the many rakes and puffers which can be powered by the Coe ship

Coe ship powering a backward rake

Coe ship powering a forward rake

Coe ship powering a block puffer

See also

• Puffer

External links

• Coe ship at the Life Lexicon

• The Coe Ship (glider 9152) at David Eppstein's Glider Database

• Coe ship at Adam P. Goucher's Catagolue