Noah's ark
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Noah's ark  
View static image  
Pattern type  Puffer  

Number of cells  16  
Bounding box  15 × 15  
Direction  Diagonal  
Period  1344  
Speed  c/12  
Discovered by  Charles Corderman  
Year of discovery  1971  
 
 
 

Noah's ark is a diagonal puffer that was found by Charles Corderman in 1971.^{[1]} It consists of two mutually stabilizing switch engines and is thus an ark. Its name comes from the variety of objects it leaves behind  in particular, every 1344 generations it produces 42 blocks, 40 blinkers, 22 beehives, eight loaves, four gliders, two boats, two block on tables, two long boats, two ships, and one beacon.
A 3glider synthesis of a switch engine discovered by Luka Okanishi in March 2017 allowed for a 6glider synthesis of Noah's ark.
Gallery

Occurrence
Noah's ark appeared in the b3s23/G1 census on Catagolue on March 11, 2021, and later appeared in the b3s23/C1 census on May 22, 2021.
References
 ↑ Robert Wainwright (December 1971). Lifeline, vol 4, page 3.
External links
 Noah's ark at the Life Lexicon
 Noah's ark at Adam P. Goucher's Catagolue (linear growth)
 Noah's ark at Wikipedia (name origin)
Categories:
 Patterns
 Patterns with 16 cells
 Patterns found by Charles Corderman
 Patterns found in 1971
 Patterns that can be constructed with 6 gliders
 Outertotalistically endemic patterns
 Isotropically endemic patterns
 Linear growth
 Infinite growth
 Puffers
 Diagonal puffers
 Puffers with period 1344
 Puffers with speed c/12
 Patterns with bilateral diagonal symmetry
 Natural periodic objects
 Patterns involving switch engines