The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

44 MARINE REVIEW Use Decked ieloat (Continued from Page 21) partments (seven in the 24-foot size), each provided with a manhole to per- mit of painting and inspection. These egmpartment also furnish ample ac- commodation for the stowage of food supplies. A sufficient number of large scuppers with automatic self-closing valves are provided to drain the boat effectively. Cypress thwarts and seats are laid on angle iron gunwales to which are hinged high folding weather- boards. These boards, at sides and ends, can be quickly raised and su- tomatically lock into position. Wooden guards extend along the outside of the weatherboards. When the boards are folded down, the guards supply all the necessary chocking support for nesting another Lundin boat. Provision is made at each end for the cesired releasing gear. On the high aft deck the helmsman may stand free from interference by the passengers and with a large area of vision. The flat bottom makes it possible to push off from the ship’s side with a quick and safe getaway, and together with the spoon-shaped ends permits of safe towing particu- larly in rough water. The shape of the boat and the position of the oarlocks makes it easy for an in- experienced crew to hanlde. Maximum Buoyancy The four standard sizes of Lundin decked lifeboats are similar in model. The following buoyancy figures, given for the 28-foot, 60-person boat, are therefore, proportionately true for the 24-foot, 26-foot and 30-foot sizes. The total weight of the boat, 4600 pounds, plus the weight of 60 persons at 165 pounds is 14,500 pounds. To A VIEW SHOWING HOW TWO LUNDIN DECKED LIFEBOATS ARE NESTED ONE ABOVE THE OTHER. THE UPPER BOAT IS CUT March, 1926 Lundin Decked Lifeboats Dimensions and Capacity Measured length Total volume, cubic feet Rated capacity, persons Weight of boat alone, pounds Weight of boat loaded, pounds (Persons figured at 140 pounds each) Overall length Beam over fenders Depth with sides folded—Amidships At ends of boat Nested height, two boats—Amidships At ends of boat 26/0" 300" 26’8”’ 288 30/8” 8’8”” 10'0’ 3/0” 3/4"" 4’0"" 4.6” 6’0”" 6’8"" 770"" W710"! NOTE—Lundin lifeboats are also made in a semidecked type of the following sizes, approved as Class 1-A_ lifeboats: 20-foot, 25-person. support this weight, the body of the boat, up to the deck, has a volume of 285.8 cubic feet, and the fenders 837.1 cubic feet, making a total of 322.9 cubic feet, or a buoyancy of 20,666 pounds. This gives a mini- mum reserve buoyancy of 6166 pounds or 29.8 per cent of the total per- manent buoyancy, which cannot be destroyed unless the boat is damaged by puncturing the watertight com- partments or by removing the fend- ers. As a matter of fact, the re- serve buoyancy is even greater con- sidering the total buoyancy of the boat and fenders up to the gunwale. In this case the reserve is 17,500 pounds or 54.7 per cent of the total buoyancy. which can be diminished only temporarily by shipping water into the boat. Protection against this is provided by the unusually high freeboard with the weatherboards raised and by the scuppers, as well as by its great stability. The draft of the loaded boat is 16 inches, which leaves a freeboard to top of gunwale of 15 inches, and to top of weather- boards of 83 inches. The watertight compartments are of nearly equal capacity. There would be enough reserve buoyancy 14-foot, 12-person; 20-foot, 20-person, and left if two compartments were flooded, for the boat to carry its rated number of persons with the deck above the waterline. Assuming the improbable contingency of the loss of both fenders and the opening of all but three compartments, the boat, though down to the gunwales in the water, would still be safe with its passengers hanging on, _ sufficiently supported by it. Stability Has Been Tested The design of the Lundin decked lifeboat provides a stability in excess of that obtained in the usual type of lifeboat. Comparative tests con- ducted by the Massachusetts Insti- tute of Technology, have demon- strated that for boats of equal length the Lundin boat possesses a stability more than three times that of a standard lifeboat, and at the same time has practically the same angle of zero stability. Because of this great stability it is always safe for the passengers to sit on the seat instead of having to huddle in the bottom of a boat partly filled with water. Lundin decked lifeboats are so much lower compared with standard life- AWAY TO SHOW THE CONSTRUCTION. NOTE THE SELF-BAILING INNER BOTTOM, THE SUBDIVISION BY BULKHEADS AND THE STEEL SHEATHED BALSA FENDERS ; 4 :