If you done it all , just click the house icon ( down of the lust bar ) just select Penelope cabin when you in the ship
Well I have completed all the main quests and it's just the relationship quests that are left which is capt. Ceres and the fortune teller is telling that there is nothing left to advance the relationship but some secret events are left and when I try to change the house location from celica's to Penelope's I'm not getting the option do to that