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{{Spaceship
{{Spaceship
|name         = Coe ship
|name             = Coe ship
|pname       = coeship
|pname           = coeship
|type         = Puffer engine
|type             = Puffer engine
|c           = 28
|c               = 28
|bx           = 17
|bx               = 17
|by           = 12
|by               = 12
|dir         = Orthogonal
|fc              = 43.4
|p           = 16
|dir             = Orthogonal
|m           = 16
|p               = 16
|s           = c/2
|m               = 16
|h           = 38.0
|s               = c/2
|discoverer   = Tim Coe
|z                = 8c/16
|discoveryear = 1995
|h               = 38.0
|synthesis    = 8
|symmetry        = n
|synthesisRLE = true
|discoverer       = Tim Coe
|life105      = true
|discoveryear     = 1995
|life106      = true
|rulemin          = B3/S23
|plaintext   = true
|rulemax          = B38/S23
|rle         = true
|isorulemin      = B3-cky/S23-c
|animated     = true
|isorulemax      = B34cekt5ce6ci7e8/S234cey5cek6ei7e
|viewerconfig = #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 600 ]]
|synthesis        = 7
|apgcode     = xq16_gcbgzvgg826frc
|synthesisRLE    = true
|plaintext       = true
|rle             = true
|animated         = true
|viewerconfig     = #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 600 ]]
|apgcode         = xq16_gcbgzvgg826frc
|eppsteinid      = 9153
|pentadecathlonid = 28P16H8V0.1
}}
}}
The '''Coe ship''' is the first [[period]]-16 [[c/2 orthogonal|c/2]] orthogonal [[spaceship]] to be discovered; by [[:Category:Patterns found by Tim Coe|Tim Coe]] in October [[:Category:Patterns found in 1995|1995]]. It works as a [[puffer engine]] because it produces a long [[spark]] behind it as it moves.
The '''Coe ship''' is the first known {{periodS|16}} [[c/2 orthogonal]] [[spaceship]], discovered by [[Tim Coe]] on October 26, {{year|1995}}.<ref name="lifepage_p16" /> It consists of a [[lightweight spaceship]] stabilizing a [[spark]]y, modified [[heavyweight spaceship]].


If [[spaceship flotilla|nontrivial flotillae]] are not counted, then Coe ship is the fifth most common naturally occurring spaceship, appearing once per 171,000,000 [[heavyweight spaceship]]s.
== Use as a puffer engine ==
The Coe ship can be used as a [[puffer engine]] because it produces a long back spark, which leads to [[puffer]]s and [[rake]]s, as shown below.<ref>{{CiteSummersPattern|accessdate=March 24, 2016}}</ref>


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.<ref>https://catagolue.appspot.com/census/b3s23/C1/xq16</ref> A second Coe ship appeared in June 2016, and three more shortly after. However, the [[Schick engine]]s and the [[copperhead]] have appeared in symmetric soups.
{| style="margin:auto;width:300px"
|{{EmbedViewer
|pname = coebackrake
|position    = center
|viewerconfig = #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
|caption      = Coe ship powering a backward rake
}}
|-
|{{EmbedViewer
|pname = coerake
|position    = center
|viewerconfig = #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
|caption      = Coe ship powering a forward rake
}}
|-
|{{EmbedViewer
|pname = coeblockpuffer
|position    = center
|viewerconfig = #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
|caption      = Coe ship powering a block puffer
}}
|}


==Image gallery==
== Occurrence ==
Just a few of the many rakes and puffers which can be powered by the Coe ship <ref>http://entropymine.com/jason/life/#collections (jslife/c2-extended/c2-0016.lif)</ref>
{{main|List of natural spaceships}}
The Coe ship appeared in an asymmetric [[soup]] found by [[apgsearch]] in December 2015,<ref name="post26242" /> making it the first [[natural]]ly occurring non-period-4 spaceship. A second Coe ship appeared on [[Catagolue]] in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.<ref>{{CiteCatagolueStats|accessdate=July 4, 2019}}</ref>


{|
== Glider synthesis ==
|-
[[Mark Niemiec]] found a {{gliders|9}} [[Glider synthesis|synthesis]] of this spaceship on October 28, 1995.<ref name="lifepage_p16" /> A {{gliders|7}} synthesis was discovered by [[2718281828]] on December 8, {{year|2017}}.<ref name="post53496" />
|[[Image:Coeshipbackwardrake.png|framed|left|Coe ship powering a backward rake]]
|[[Image:Coeshipforwardrake.png|framed|left|Coe ship powering a forward rake]]
|[[Image:Coeshippuffer.png|framed|left|Coe ship powering a block puffer]]
|}


==See also==
== See also ==
*[[Puffer]]
* [[31P8H4V0]]
*[[31P8H4V0]]
* [[Sidecar]]


==References==
== References ==
<references />
<references>
<ref name="lifepage_p16">{{LinkCallahan|patterns/p16/p16.html|patternname=Tim Coe's p16 puffer engine}}</ref>
<ref name="post26242">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 26242
|author = Apple Bottom
|date  = December 27, 2015
}}</ref>
<ref name="post53496">{{LinkForumThread
|format = ref
|title  = Re: Small Spaceship Syntheses
|p      = 53496
|author = 2718281828
|date  = December 8, 2017
}}</ref>
</references>


==External links==
== External links ==
{{LinkWeisstein|filename=CoeShip.html}}
* {{LinkLexicon|filename=lex_c.htm#coeship}}
{{LinkLexicon|filename=lex_c.htm#coeship}}
* {{LinkPentadecathlonObject|28P16H8V0.1|archivedate=20221109181312}}
{{LinkEppstein|9152|patternname=The Coe Ship (glider 9152)}}
* [https://web.archive.org/web/20150422151801/http://fano.ics.uci.edu/ca/rules/b3s23/g4.html The Coe Ship (glider 9153)] at [[David Eppstein]]'s Glider Database
{{LinkCatagolue|xq16_gcbgzvgg826frc}}
* {{LinkCatagolue|xq16_gcbgzvgg826frc}}


[[Category:Smoking ships]]
[[Category:Smoking ships]]
[[Category:Rakes]]
 
[[Category:Puffers]]
__NOTOC__

Latest revision as of 05:55, 11 August 2024

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 ]]
View animated image
View static image
Pattern type Puffer engine
Spaceship
Number of cells 28
Bounding box 17 × 12
Frequency class 43.4
Direction Orthogonal
Period 16 (mod: 16)
Speed c/2 | 8c/16
Heat 38.0
Kinetic symmetry n
Discovered by Tim Coe
Year of discovery 1995

The Coe ship is the first known period-16 c/2 orthogonal spaceship, discovered by Tim Coe on October 26, 1995.[1] It consists of a lightweight spaceship stabilizing a sparky, modified heavyweight spaceship.

Use as a puffer engine

The Coe ship can be used as a puffer engine because it produces a long back spark, which leads to puffers and rakes, as shown below.[2]

x = 44, y = 21, rule = B3/S23 29b4o$28b6o$28b4ob2o$32b2o4$38b6o$26b2o8b2o5bo$25b3o6b2obo5bo$26b3o9bo 3bo$27bobo10bo$12bobo13bo11b2o$12b2o25b4o$13bo25b2ob2o$41b2o$obo27b6o$ 2o27bo5bo$bo33bo$29bo4bo$31b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
Coe ship powering a backward rake
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 44, y = 24, rule = B3/S23 bo$b2o$obo$29b4o$5bo22b6o$5b2o11b4o6b4ob2o$4bobo10b6o9b2o$17b4ob2o$9bo 11b2o$9b2o$8bobo27b6o$26b2o8b2o5bo$25b3o6b2obo5bo$14b2o10b3o9bo3bo$12b 2o2bo10bobo10bo$12b2ob2o11bo11b2o$13bob2o22b4o$12b2o25b2ob2o$41b2o$18b 2o10b6o$14b4ob2o8bo5bo$14b6o15bo$15b4o10bo4bo$31b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
Coe ship powering a forward rake
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 25, y = 15, rule = B3/S23 13b2o$10b3ob2o$10b5o$11b3o$8bo$7bobo$19b6o$17b2o5bo$15b2obo5bo$2o6b2o 9bo3bo$2o6bo12bo$21b2o$20b4o$20b2ob2o$22b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 8 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 ]]
Coe ship powering a block puffer
(click above to open LifeViewer)
RLE: here Plaintext: here

Occurrence

Main article: List of natural spaceships

The Coe ship appeared in an asymmetric soup found by apgsearch in December 2015,[3] making it the first naturally occurring non-period-4 spaceship. A second Coe ship appeared on Catagolue in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.[4]

Glider synthesis

Mark Niemiec found a 9-glider synthesis of this spaceship on October 28, 1995.[1] A 7-glider synthesis was discovered by 2718281828 on December 8, 2017.[5]

See also

References

  1. ↑ 1.0 1.1 Tim Coe's p16 puffer engine at Paul Callahan's Page of Conway's Life Miscellany
  2. ↑ Jason Summers' pattern collections. Retrieved on March 24, 2016.
  3. ↑ Apple Bottom (December 27, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on July 4, 2019.
  5. ↑ 2718281828 (December 8, 2017). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums


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