I don't think its possible without editing
The main way I can think of is by using a mod that either makes the ship purchasable else where, or that it puts a new jumpgate down from one system to the Omicron system that contains the Order planet.
I edited the MP startup position, made it so you started on Planet Toledo in the Omicron Minor system. I was then able to purchase the Order ship.. of course, I was stuck in that system then as all the jumpgates are "locked"... also the fact that there is no link between the normal systems and a handful of Omicron systems (check out that FL Datastorm program.. you can see the systems that are independent).
OK... so heres one method of getting an Anubis into MP that involves no modding or file editing...
Copy your single player save that has the Anubis as your ship into the multiplayer account you use (if its your own server) and you can load it in to multiplayer... your character name will be TRENT though
I guess you could convince a 3rd party admin to do it for you so you can play it on another server... but, its very unlikely they'd do it... plus would you really want to be called TRENT?
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