The Rahanas comes with 6 variants. 4 are available for purchase and 2 are not <check that with v4b6; which 2? - Snafu>. It is a common trade ship in Albion, and is used by many factions to move wares around.
Did you noticed that when spelled backwards, the name becomes "SANAHAR"?
The common variants store either Bulk, Container, Energy or Liquid wares, only. The 'unique' variants may be seen flying around in DeVries (for example) and either carry "Container & Energy" or "Bulk and Liquid". They have a single storage volume but is split as it is for a Scaldis.
The Campaign (Plot) Rahanas (Container & Energy) has it's 130,000 m3 cargo split as follows:
55,000 container (exclusively)
65,000 energy (exclusively)
10,000 fuel (exclusively)
There are now (as of v4) more C+E (or other) Rahanas ships out there for you to exploit if you so wish..