Yes. If you have sufficient PP to clone a foreign ship, and have advanced cloning researched and enabled, you may clone a ship at any time, even after the 500 ship soft limit. I have a full roster of pop ships, firecloud, and assorted bits and pieces being cloned as we speak with 520 ships in the game.
As a side note, you can still have a ship in the queue, and the clone will happen, not the build, but be sure to have enough minerals and MC on the surface or you will have a rather costly build on your hands.
*coughs* glares at Biocide *coughs* |