Star Trek Starship Size

Size

Perhaps the most important characteristic of a hull is its Size, which dictates the length, beam (width), height, mass and number of decks which the ship possesses. In this system Size is rated along a scale ranging from 1 (probes and small shuttles) to 16 (a large Borg cube), though ships of Sizes beyond 16 may certainly exist. Size does no cost weight or power, but does factor into the weight cost of many systems.

The accompanying table indicates ranges for the Length, Beam, Height and Mass of ships for each Size category. The ranges are guidelines, so you may vary the entries a little here and there. If your ship has dimensions which fir into different categories (for example, a length of 612 meters [Size 8], a beam of 350 meters [Size 7], and a height of 130 meters [Size 8], usually you should use its length to determine its Size, or choose the size into which most of its dimensions fall. The Game Master has the final say on a ship's Size category, and can alter various parameters (such as Mass) if they don't fit their preconceptions of what a particular ship should be like.

Size	Length Range	Beam Range	Height Range	SU	Mass Range	Base Maneuverability
16	5,000 - 5,999 m	2,500 - 2,999 m	1,500 - 1,799 m	7,000 - 11,000	20,000,000 - 22,999,999 metric tons	-5D+1
15	4,000 - 4,999 m	2,000 - 2,499 m	1,200 - 1,499 m	5,000 - 8,000	17,000,000 - 19,999,999 metric tons	-4D+2
14	3,000 - 3,999 m	1,500 - 1,999 m	1,000 - 1,199 m	4,500 - 6,500	14,000,000 - 16,999,999 metric tons	-4D
13	2,000 - 2,999 m	1,200 - 1,499 m	800 - 999 m	3,500 - 5,000	12,000,000 - 13,999,999 metric tons	-3D+1
12	1,500 - 1,999 m	1,000 - 1,199 m	600 - 799 m	3,000 - 4,500	10,000,000 - 11,999,999 metric tons	-2D+2
11	1,000 - 1,499 m	800 - 999 m	400 - 599 m	2,750 - 4,000	8,000,000 - 9,999,999 metric tons	-2D
10	800 - 999 m	700 - 799 m	300 - 399 m	2,500 - 3,750	6,000,000 - 7,999,999 metric tons	-1D+1
9	700 - 799 m	550 - 699 m	200 - 299 m	2,250 - 3,500	5,000,000 - 5,999,999 metric tons	-0D+2
8	600 - 699 m	400 - 549 m	100 - 199 m	2,000 - 3,250	4,000,000 - 4,999,999 metric tons	+0D
7	400 - 599 m	200 - 399 m	80 - 99 m	1,500 - 2,750	2,000,000 - 3,999,999 metric tons	+0D+2
6	300 - 399 m	100 - 199 m	50 - 79 m	1,300 - 2,500	500,000 - 1,999,999 metric tons	+1D+1
5	150 - 299 m	50 - 99 m	31 - 49 m	900 - 1,900	200,000 - 499,999 metric tons	+2D
4	100- 149 m	26 - 49 m	21 - 30 m	800 - 1,300	60,000 - 199,999 metric tons	+2D+2
3	51 - 99 m	11 - 25 m	6 - 20 m	600 - 1,000	31 - 199,999 metric tons	+3D+1
2	6 - 50 m	4 - 10 m	2 - 5 m	326 - 625	2.1 - 30	+4D
1	1 - 5 m	1 - 4 m	less than 2 m	Up to 325	up to 2 metric tons	+4D+2

Structural Units Per Size Category

Also included in the table is the number of SUs for each Size category. Again, the numbers listed are a range, to allow for flexibility. Players should assign their ships the number of SUs necessary for all pertinent systems (plus a reasonable amount for expansion), not simply because they choose the highest number they can. Game Masters must approve all SU totals for a ship based on Size.

Note that the Starship Size Table does not include an entry for the number of decks a ship has. This is because a ship's decks are a function of its purpose and design and much as they are its height. A good rule of thumb, each deck on a ship occupies 3 - 5 meters of height, but this can vary tremendously.

Important Notes

• Weight: For purposes of determining its weight, one should multiply the SU cost of a system by a factor of ten to represent the area consumed rather than actual weight.
• Base Maneuverability: This rating is added to the vessels maneuverability rating from its Propulsion System. If the ship has no sublight drive, then disregard the maneuverability rating altogether.