Ship Mass (Reference)

[vonfrank]

The "SetMass()" value in the ShipProperty of a vessel's hardpoint file has always been a difficult one to properly balance. This number lets the game determine how a ship reacts in collisions and during pulse/torpedo impacts, so for modders wanting realism, it can be nice to have proper values.

Using the highest quality 3D models of each ship available from the BC community, and a rather tedious method of calculating their volumes using voxels, I've been able to put together this list of many canon Star Trek ships' volumes based on their generally accepted length. Volume =/= mass, but if we assume ships have about the same density as water (1 metric ton / cubic meter) we can arrive at an approximation.

This is obviously not a comprehensive list of EVERY ship in the franchise, but it does include many of the more well known ships. I hope this reference table can be useful for the members of our community. 

SHIP	LENGTH (m)	VOLUME (m^3)
----------------
Saber	223	484,286
Miranda Refit	243	249,108
Nova	221	174,864
Norway	355	535,394
Steamrunner	303	808,879
Constellation	310	544,530
Centaur	388	457,993
Defiant	120	48,507
Intrepid	344	684,340
Excelsior	467	690,204
Excelsior Refit	469	731,554
Ambassador	526	2,680,091
Akira	440	1,430,578
Nebula	460	5,714,301
Galaxy	643	5,408,431
Sovereign	685	1,969,299
Prometheus	415	870,169
Sovereign Refit	685	1,969,520
----------------
Bird of Prey	110	33,725
Kvort	220	269,042
Ktinga	228	120,156
Vorcha	481	1,034,015
Neghvar	682	4,200,525
----------------
Talon	100	34,496
Falcon	130	49,949
Valdore	604	2,156,432
Warbird	1353	67,863,552
Scimitar	890	16,837,172
----------------
Hideki	100	23,203
Galor	481	1,060,994
Keldon	481	1,262,687
Obsidian Keldon	481	1,262,687
Hybrid	481	1,203,039
----------------
Bug	95	35,466
Breen	330	328,713
Vorta	650	5,223,067
Founder	3000	586,053,500
----------------
Rectangle	300	3,090,203
Diamond	450	5,592,576
Sphere	600	113,097,335
Cube	1500	3,375,000,000
Tactical Cube	1500	3,375,000,000
Assimilation Cube	3000	27,000,000,000
----------------
Marauder	366	2,091,820
----------------
Kessok Light	350	698,641
Kessok Heavy	850	20,114,640
----------------
Sona Command	354	1,120,458
Sona Battleship	837	6,938,360
----------------
NX	225	156,064
NX Refit	225	156,064
Constitution	289	193,720
Constitution Refit	305	216,251
Constitution Alt	366	423,124
Vengeance	750	3,812,973
----------------
Freighter	290	532,019
Transport	235	442,230
Card Freighter	256	274,826
Sun Buster	2050	109,117,952
----------------
Fed Outpost	500	36,364,992
Fed Facility	500	46,602,880
Fed Complex	500	53,061,248
Fed Starbase	5000	17,029,062,500
Card Outpost	800	28,870,528
Card Station	1600	45,689,856
Card Starbase	1600	49,890,625
Drydock	800	5,594,088
Kessok Mine	200	222,016

[Tethys]

This will be quite useful. Thank you very much for posting this. cookie

[Morgan]

Good info!  The mass and rotational inertia is a bitch to get right.  I usually stay within the parameters of the stock ships since it's just easier to keep track of and remove some zeroes from the canon mass to do it (for example, a 4.5million metric ton Galaxy class has its mass set to 450 in my install.  The Intrepid's 700,000 metric tons is set to 70, etc.)

[CMDR CHESS]

Uh, yeah me too. Like Example Galaxy for me had been 150 Mass, 15000 Rotation and turn out fine, especially having a low angular acceleration like 0.15 and max to about 0.45 giving that follow-through flow when turning (grace) or water boat if you will. But, I'll check those out too. It sometimes pisses me off when I can't turn again a BofP or Vorcha as they shoot at me with cannons. So, Turned the speed of the Cannon down to 50 and the torpedoes to 25. Still good speed, they look real from a distance like a friendly attacking your target, those torps look like the show at 25.