shipping the bike from Mumbai or Goa, by boat, to Bandar Abbas, Iran, with SECO shipping company. Estimated costs are about 800 USD and freight time about 10 days.

Included in these costs are all packing services, shipping crate, carnet handling at customs, etc. So if I understand correctly (and if their information is reliable), it would be as simple as a drop-off and pick up from my side, without much hassle.