Titanic was considered a pinnacle of technological achievement and thought by Ship Builders magazine to be "practically unsinkable." Titanic was divided into 16 watertight compartments; however, these did not traverse the entire height of the decks (only going as far as E-Deck), an oversight that would doom the ship. The Titanic could stay afloat with any two of the middle compartments flooded or the first four compartments flooded; any more and the ship would sink.