Titanic 722 Piece Cobi Building Block Set. This impressive building block construction set is from Cobi’s Historical Collection. It is 64 cm long and 15 cm high when completed. Numerous details contribute to the 1:450 scale and faithfully recreate the shape and body of the legendary original. There are several moving elements in the set. This edition includes rotating wheels mounted on the ship’s flat bottom. The ship can “swim” on flat surfaces such as floors, carpets, or tables with some help from the builders.