Hello Dorodin,
From the Standard Vehicles and Robots Table on p. 284, Chapter 13 of THB:
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Vehicle/Robot TL Size
Air/raft 8 6000vl
Pressurized Air/Raft 8 8000vl</pre>[/QUOTE]However, I think you have the right idea, how about this the 4000vl chassis is a single/dual seat model. Sort of like cars: Mini, compact, mid or sports car, sedan, station wagon,...,etc.
Here are examples from a couple of the other Traveller systems:
TNE: Rulebook p. 363 (Open), p. 364 Encolsed
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Vehicle TL Size
Air Raft (Open) 10 28 kiloliters = 28000 liters
Enclosed Air Raft: 12 42 kiloliters = 42000 liters</pre>[/QUOTE]The above weights are minus cargo capacity.
Marc Miller's Traveller (aka T4) p. 84
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Vehicle TL Size 1400/1350
Air Raft: 8 4 tons = 5600/5400vl</pre>[/QUOTE]MegaTraveller Imperial Encyclopedia (GDW) Open p. 76 & enclosed p.77.
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Vehicle TL Size 1400/1350
Open-Top Air Raft: 15 2 tons = 2800/2700vl
Enclosed Air Raft: 15 4 tons = 5600/5400vl</pre>[/QUOTE]MegaTraveller 101 Vehicles (DGP) Open pp. 20, 24, back cover and 46. Enclosed p. 22, 26, 33, back cover, 36, and 46.
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Vehicle TL Size 1400/1350
Open Air/Raft (39): 10 4 tons = 5600/5400vl
Open Air/Raft Vargr (47): 10 2.5 tons = 3500/3375vl
Open Air/Raft (69): 10 0.75 tons = 1050/1012.5vl
Open-top Air/Raft (97): 15 2 tons = 2800/2700vl
Enclosed Air Raft (43): 12 10 tons = 14000/13500vl
Enclosed Air Raft (51): 15 3 tons = 4200/4050vl
Enclosed Air Raft (68): 10 2 tons = 2800/2700vl
Enclosed Air Raft (74): 11 4 tons = 5600/5400vl
Enclosed Air Raft (75): 11 4 tons = 5600/5400vl
Enclosed Air Raft (98): 15 4 tons = 5600/5400vl</pre>[/QUOTE]
Originally posted by Borodin:
Hmm, IIRC, the air/raft in THB is listed at 4000vl, but the PRESSURIZED air/raft is 6000vl. So, they may be forgetting to specify which type. Just a thought.