Sounds interesting - funny the 2/27 thing - I was going to mention something based on cubic meters myself (and use 13.5 cubic meters in the Traveller deckplan 'ton' versus the more accurate RW figure).AndrewW said:Aircraft are covered under the vehicle system and it doesn't use dTons though there is a conversion (space used there is just 2/27's of a dTon). Also it is formula based, tables are used to tell you things like what percentage of space a type of system uses, cost, etc.