But it must not be overlooked that the provision of sufficient lifeboats on deck is not evidence they will all be launched easily or all the passengers taken off safely. It must be remembered that ideal conditions prevailed that night for launching boats from the decks of the Titanic: there was no list that prevented the boats getting away, they could be launched on both sides, and when they were lowered the sea was so calm that they pulled away without any of the smashing against the side that is possible in rough seas. Sometimes it would mean that only those boats on the side sheltered from a heavy sea could ever get away, and this would at once halve the boat accommodation. And when launched, there would be the danger of swamping in such a heavy sea. All things considered, lifeboats might be the poorest sort of safeguard in certain conditions. Life-rafts are said to be much inferior to lifeboats in a rough sea, and collapsible boats made of canvas and thin wood soon decay under exposure to weather and are danger-traps at a critical moment. Some of the lifeboats should be provided with motors, to keep the boats together and to tow if necessary. The launching is an important matter: the Titanic's davits worked excellently and no doubt were largely responsible for all the boats getting away safely: they were far superior to those on most liners. _Pontoons_ After the sinking of the Bourgogne, when two Americans lost their lives, a prize of 4000 Pounds was offered by their heirs for the best life-saving device applicable to ships at sea. A board sat to consider the various appliances sent in by competitors, and finally awarded the prize to an Englishman, whose design provided for a flat structure the width of the ship, which could be floated off when required and would accommodate several hundred passengers. It has never been adopted by any steamship line. Other similar designs are known, by which the whole of the after deck can be pushed over from the stern by a ratchet arrangement, with air-tanks below to buoy it up: it seems to be a practical suggestion.