List of engineered spaceship mechanisms

This page aims to present a list of known crawler and stabilizable puffer engine mechanisms which are usable for spaceship construction, alongside data on any associated completed spaceships and links to project threads where more information can be found and work can be conducted.

Entries are color coded depending on their size: blue indicates a spaceship that can fit in a default LifeViewer universe, green indicates a spaceship that can fit in an enlarged LifeViewer universe, yellow indicates a spaceship that cannot fit in a LifeViewer universe at all, and red indicates a crawler or engine with no known spaceship.

Adjustable speeds and universal constructor technology are excluded from this list.

Speed			Name		Year	Thread		Smallest spaceship	Population	Bounding box
x	y	p								x	y
Crawlers
17	0	45	17c/45 reaction		2004	1258		caterpillar	11,880,039	330,721	4,195
31	0	240	31c/240 Herschel-pair climber		2014	1274		leaf bug 2	24,460	12,415	6,315
13	1	31	(13,1)c/31 Pseudo-B climber		N/A	1182		no examples constructed
27	1	72	(27,1)c/72 Herschel climber		N/A	2130		no examples constructed
28	3	84	(28,3)c/84 climber		N/A	6259		no examples constructed
12	4	62	(12,4)c/62 lumps of muck climber		2025	7117		solifuge	1,414	335	351
13	4	41	(13,4)c/41 B-heptomino climber		N/A	1539		no examples constructed
23	5	79	(23,5)c/79 Herschel climber		2014	1543		waterbear	197,896	28,010	13,295
31	5	137	(31,5)c/137 climber		N/A	5867		no examples constructed
34	7	156	(34,7)c/156 Herschel climber		2023	2286		much smaller (34,7)c/156 spaceship	647,595	149,100	47,454
15	11	107	(15,11)c/107 climber		2026	7128		silk moth	1,190,163	219,828	199,808
Stabilized puffer engines
18	0	36	pufferfish		2014	N/A		pufferfish spaceship	235	51	32
8	8	96	switch engine		1991	N/A		2-engine Cordership	100	48	41