Destroy Ship model
fixed the ship model ==  CreateCaptains: migrating =================================================
-- create_table(:captains)
   -> 0.0013s
==  CreateCaptains: migrated (0.0013s) ========================================

==  CreateRegistrations: migrating ============================================
-- create_table(:registrations)
   -> 0.0011s
==  CreateRegistrations: migrated (0.0011s) ===================================

==  CreateEngines: migrating ==================================================
-- create_table(:engines)
   -> 0.0011s
==  CreateEngines: migrated (0.0011s) =========================================

==  CreatePlanets: migrating ==================================================
-- create_table(:planets)
   -> 0.0009s
==  CreatePlanets: migrated (0.0010s) =========================================

==  CreateShips: migrating ====================================================
-- create_table(:ships)
   -> 0.0010s
==  CreateShips: migrated (0.0011s) =========================================== for best results