Sorium Harvester

[DasColonel]

How do you offload the fuel in a sorium harvester ship prior to going to gas giant to begin harvesting?

[Haji]

During the design process you have to tick the "tanker" box in the upper right corner. This will make the ship start with 10% fuel and give additional orders the ship can perform, such as "unload 90% to a colony".

Edit: Just in case it isn't obvious, you can check the box any time you want, even after you have built the ships.

[DasColonel]

Thanks worked like a charm.

[83athom]

I simply put Sorium Harvesters on all my commercial ships (Grav Survey ships included in here), and most of my larger military ships (cruisers up have 1, Carriers/Battleships up have 2+). 

Edit: no more on my battleships as it messes up the officer assignment (but I still have them on my carriers)

[joeclark77]

I tend to like having a colony on one of the moons of the gas giant where fuel can be offloaded.  That way if enemy ships are about to destroy my fuel harvesters, I can at least save the fuel.  So essentially, I design a ship like an immobile sorium harvesting platform, but with one civilian engine.  I still tow them into place, but allow them to move under their own power to dump the fuel and return to the gas giant.