Thread Resurrect
Using this fan-produced site:
http://www.b5tech.com/
...plus the sort-of-random assumption that 14 mass tons = 1 displacement ton for armored warships (on the average), then:
G'Quan-class Heavy Cruiser (Narn)
1400m long, 18.6 million metric tons
= 1.3 million tons volume
I'd scale this back and classify it as an early-interstellar dreadnought.
Aurora-class Starfury (Terran)
9.5m long, 48 metric tons
= 3.4 tons volume
No, it has to be larger than that... let's see.
4 wings at appx 5m x 6m x 0.5m = 4 tons total.
Cockpit appx 5m x 5m x 4m = 7 tons.
Total volume is close to 10 tons.
This would be like a souped-up 10+ton Rampart, or more like a larger bomber.
Nova-class Dreadnought (Terran)
1500m long, 32 million metric tons
= 2.2 million tons volume
I'd scale this back and classify it as an early-interstellar dreadnought.
Omega-class Destroyer (Terran)
1700m long, 44 million metric tons
= 3 million tons volume
I'd scale this back and classify it as a TL12-15 dreadnought.
Sharlin-class War Cruiser (Minbari)
1600m long, 44 million metric tons
= 3 million tons volume
I'd scale this back slightly (1 million tons) and classify this as similar in capabilities as a pre-Maghiz Darrian superdreadnought.
Primus-class Battle Cruiser (Centauri)
1500m long, 22 million metric tons
= 1.5 million tons volume
I'd keep the size and classify it as an early-interstellar dreadnought.
Vorchan-class Attack Cruiser (Centauri)
600m long, 3.2 million metric tons
= 230,000 tons volume
I'd classify this as an early-interstellar dreadnought.
Lightning-class Fighter (Vorlon)
25m long, unknown mass
Roughly conical, so say 10 to 20 tons.
This would be an above-Imperial-tech fighter. TL20? Higher?
Star Dreadnought (Vorlon)
1330m long, unknown mass
Probably around 1 million tons volume.
This would be an above-Imperial-tech dreadnought. TL20? Higher?
Planet Killer (Vorlon)
perhaps 45,000m long, unknown mass
Terrifying size.
This would be an above-Imperial-tech monstrosity. TL20? Higher?
"Battle Crab" (Shadows)
1.5km long, unknown mass
Perhaps 1 - 1.5 million tons volume.
This would be an above-Imperial-tech dreadnought. TL20? Higher?
Zephyr 109 Light Fighter (corsair)
16m long, 32 metric tons.
Probably 10 tons. Very light armor.
This would be an early interstellar fighter.
Raider "Battlewagon" (corsair)
300m long, 2.1 million metric tons.
= 150,000 tons volume
Essentially a budget battle rider for up to 21 Zephyrs.
This would be an early interstellar carrier.
Reclassification/Travellerization