But as regarded emigrant steamships there was a rule which provided that if the boats under davits required by the table did not furnish sufficient accommodation for all on board, then additional boats of approved description (whether under davits or not) or approved life rafts should be carried, and that these additional boats or rafts should be of at least such carrying capacity that they and the boats required by the table should provide together in vessels of 5,000 tons and upwards three-fourths more than the minimum cubic contents required by the table, so that in the case of an emigrant ship such as the _Titanic_ the requirements under the rules and table together exacted a provision of 9,625 cubic feet of lifeboat and raft accommodation (5,500 feet in boats under davits with three-fourths, namely, 4,125, added). Taken at 10 cubic feet per person, this would be equivalent to a provision for 962 persons. No doubt at the time these rules were made and this table was drawn up it was thought that, having regard to the size of vessels then built and building, it was unnecessary to carry the table further. The largest emigrant steamer then afloat was the _Lucania_, of 12,952 tons. In the report of the select committee of the House of Commons a reference to water-tight bulkheads had been made, which was in the following terms: Though the question of construction was clearly not included in the reference to the committee, still they think it only right to state, after having heard the evidence, that the proper placing of bulkheads, so as to enable a ship to keep afloat for some length of time after an accident has occurred, is most important for saving life at sea, and a thing upon which the full efficiency of life-saving appliances largely depends. This passage probably explains the insertion in the board of trade's rules for life-saving appliances of rule No. 12, which is as follows: _Water-tight compartments._--When ships of any class are divided into efficient water-tight compartments to the satisfaction of the board of trade, they shall only be required to carry additional boats, rafts and buoyant apparatus of one-half of the capacity required by these rules, but the exemption shall not extend to life jackets or similar approved articles of equal buoyancy suitable to be worn on the person.