Ship+fishhook

Ship+fishhook
x = 7, y = 8, rule = B3/S23 6bo$4b3o$3bo$3b2o2$2o$obo$b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
View static image
Pattern type	Constellation
Number of cells	13
Bounding box	7 × 8
Static symmetry	Unspecified
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S – B378/S012345678 # of rules 212 = 4096 Isotropic rules B/S – B2cik34-an5-q6-n78/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis
Pattern files Plaintext shipplusfishhook.cells RLE shipplusfishhook.rle
Identifiers apgcode xs13_xca23z356

Ship+fishhook, also called equivalent names such as fishhook+ship or ship+eater, is a catalyst used in many oscillators and conduits.

Uses

The catalyst is used with a one-cell leading edge wherever a ship turns into a loaf when hit. If it turns into an I-heptomino relative instead, an R49 catalyst can be used instead.

x = 34, y = 34, rule = B3/S23 19bo$17b3o$16bo$16b2o2$13b2o$13bobo$14b2o6$17b2o8b2o$2o14bobo7bobo$bo 11b2obo9b2o$bobo9bo4b2o10b2o$2b2o10b2o4bo9bobo$6b2o9bob2o11bo$5bobo7bo bo14b2o$5b2o8b2o6$18b2o$18bobo$19b2o2$16b2o$17bo$14b3o$14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 7 THUMBSIZE 2 ZOOM 8 ]] 72P21, an example of the catalyst being used. (click above to open LifeViewer) RLE: here Plaintext: here

x = 36, y = 24, rule = B3/S23 30b2o$30b2o3$32bo$31bobo$32bo$33b3o$35bo$33b2o$9bo23bo$9bobo19bobo$9b 3o19b2o$11bo15b2o$27bobo$28b2o3$2b2o$3bo20b2o$3o7b2o6b2o4bobo$o9b2o7bo 6bo$16b3o7b2o$16bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 20 THUMBSIZE 2 ZOOM 8 ]] The catalyst being used in HL98B (click above to open LifeViewer)

A ship+fishhook catalyst can also be combined with an elevener to form a different catalyst, used in 70P26 and 94P53.

x = 39, y = 10, rule = B3/S23 5b2o25b2o$5bobo23bobo$6b2o6b3o5b3o6b2o$2b2o9bo2bo5bo2bo9b2o$bobo5b2o 17b2o5bobo$bo6bobo2b2o9b2o2bobo6bo$2o6bo21bo6b2o$6b3o21b3o$5bo10b2o3b 2o10bo$5b2o9b2o3b2o9b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 13 THUMBSIZE 2 ZOOM 8 ]]

70P26, an example of the ship+fishook+elevener catalyst being used. (click above to open LifeViewer) RLE: here Plaintext: here

Occurrence

From statistics, as a very rough estimate, its occurrence should be about 20,000 times rarer than the fishhook itself, which is the frequency of a loaf appearing in a specific position (10,000) in two of four possible rotations (×2), as a loaf placed correctly will be converted to a ship, and loaves are much more common than non-Herschel ships. This puts it about on par with quadpole tie ship.

It does not appear in https://catagolue.hatsya.com/census/x2xb3s23clustersv0/C1/xs51, which evaluates the frequency of quasi still lifes and some farther apart, which is expected, as ship+fishhook would have frequency class 25, and figure eight (23) and mold (24) appear only once each.

See also

• Eater bridge eater, used for a different one-cell leading edge

External links

• Ship+fishhook at Adam P. Goucher's Catagolue