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Conventions

The tables below give the minimum orthogonal width and height of the envelope of a spaceship of the specified type. This is found by simulating a period-p spaceship for p iterations, with the initial phase chosen to minimise the width or height.

For types where the minimum is known, references point to the proof of minimality rather than the discovery of the ship possessing it. A stamp collection of minimum-width ships is given below the table.

Symmetry considered is in the line parallel to a spaceship's direction of motion.

Seeds Group (B2/S-B25678/S5678) (WIP)

B2/S long-thin (Seeds)

B2c means gutters must be at least 3 cells wide always to be preserves, meaning all gutter spaceships comprised of noninteracting parts; it is omitted.

Velocity	Asymmetric	Odd-symmetric	Even-symmetric	Odd glide-symmetric	Even glide-symmetric
(1,0)c/1	4	w ≤ 11	4	-	-
(1,0)c/2	30(LLSSS)	39(LLSSS)	46	-	-
(2,0)c/2	-	-	-	-	-
(1,0)c/4	24

Strobing Group (B0/S-B012345678/S01234567) (WIP)

B012-e3aj/S2aei3ijq4y5an7e long-thin (Twinkle)

Velocity	Asymmetric	Odd-symmetric	Even-symmetric	Gutter	Odd glide-symmetric	Even glide-symmetric
(1,0)c/4	19	23	24
(1,1)c/4	10 < w	13 < w ≤ 17			12
(1,0)c/6	6	11 < w	10 < w	-
(2,0)c/6	20
(1,1)c/6	18	25		-	-
(2,0)c/8					15
(1,1)c/20	-	-	-	-	10	-

sylvie's collection is