The Estrella is the first Battleship available at the start of the game.
Estrella is given to the player at the start of his/her game.
A good use for Estrella is as super-scrap. Super scrap can be sold in the auction house for gold. Put one Super Transmission engine on an estrella-I, then fill any remaining space with lander module-I. This will make super-scrap.
However, this is what the new user needs to start farming i1 through i6. Ergo, don't be too quick to write it off. This is true until the new user gets the Nettle.