Just trying to resurrect the thread
Concering Titans, I find it interesting that there seem to be two approaches -
Approach 1 seems to compare the Titans (in size, if not in weight) more to BattleTech Mechs, mainly the imperial armour books -
14m / 410 tons
(as seen in Imperial Armour Vol. 3, pg. 252)
22,3m / 738 tons
(as seen in Imperial Armour Vol. 6, pg. 119)
33m / (?) tons
(estimate based on scale diagram in the Apocalypse Rulebook, pg. 124)
If we use this approach, the Titans aren't really that scary, but more like two legged AT-AT with beefed up armour and weapons ; )
Also the transport would be (relatively) easy, if a bit depending on the ressources of the Rogue Trader.
Landing Ships that should work would look something like the two below, both which are easily within a size that would fit fine in most Capital Ships Main Hangars -
Approach 2 is making everything much bigger -
Warhound
25m
Reaver
40m
Warlord Class. Mars Pattern Mec.III/ IX
50-70m
or even much larger ...
On this 'bigger equals better' approch, the Titans should really be classified as planetary siege units and for deployment the (already mentioned) 16km Adeptus Mechanicus Transport Ships are the right choice ... and also one Titan Legion would be quite a challenge for everything up to a Dinochrome Bolo MkXXXIII Brigade... ( tech specs ) and quite beyond the ability even for the most resourceful Rogue Trader to handle .... °_°