Page:United States Statutes at Large Volume 47 Part 2.djvu/692

 2296 INTERNATIONAL LOAD LINE CONVENTION. JULY 5, 19M. Coe1IIeient of fine- 1ltIS6. Structural strength. Material. topside section equal to that in the actual midship section. Where there is a step or break in the topsides (e.g ., as ia the Turret Deck ship) 70 per cent. of the area above the step or break is included in the area used to determine the equivalent section. In So ship without an enclosed superstructure covering at least .6 L amiaships, without a complete trunk or without a combination of intact partial superstructures and trur~k extending all fore and aft, where D is less than ~, the depth used with the 'fable is not to be L taken as less than 15' Rule XXXVI.- OoejJicient of Fineness (c). The coefficient of fineness used with the Freeboard Table is given by- 35A c=L.B.d1 ' where A is the ship's moulded displacement in tons (excluding boso;ing) at a mean moulded draught d1 which is 85 per cent. of the moulded depth. The coefficient c is not to be taken as less than .68. Rule XXXVII. -Strength. The Assigning Authority is to be satisfied with the structural strength of ships to which freeboards are assigned. Ships which comply with the highest standard of the rul-g of a Classification Society recognised by the Administration, shall be regarded as having sufficient strength for the minimum freeboards allowed under the Rules. Ships which do not comply with the highest standard of the rules of a Classification Society recognised by the Administration, shall be assigned such increased freeboards as shall be determined by the Assigning Authority, and for guidance the following strength moduli a·re formulated:- Material. -The strength moduli are based on the assumption that the strecture is built of mild steel, manufactured by the open hearth process (acid or basic.), and having a tensile strength of 26 to 32 tons per square inch, and an elongation of at least 16 per cent. on a length of 8 incnes.