Page:United States Statutes at Large Volume 47 Part 2.djvu/722

 2326 Fresh water. INTERNATIONAL LOAD LINE CONVENTION. JULY 5, 1930. Rule LXVI. -Frellh Water Freeboard. The minimum freeboard in fresh water of unit density is the free- board obtained by deducting from the minimum freeboard in salt water 4~T inches, where A = displacement in salt water in tons at the Summer load water- line, and T = tons per inch immersion in salt water at the Summer load water-line. Where the displacement at the Summer load water-line cannot be certified, the deduction is to be ~ inch per foot of Summer draught, measured from the top of the keel to the centre of the disc. Rule LXVII.- Freeboard TabuJor Steamers. 6t=~d table for BASIC Minimum Summer Freeboards for Steamers which Comply with the Standards Laid Down in the Rules. L. Freeboard. L. Freeboard. L. Freeboard. L. Freebou'd. - (Feet.) (Inches.) (Feet.) (Inches.) (Feet.) (Inches.) (Feet.) (Inches.) SO S.O 250 32.3 420 77.S 590 127.0 90 9.0 260 34.4 430 80.9 600 129.5 100 10.0 270 36.5 440 84.0 610 132.0 110 11.0 280 3S.7 450 S7.1 620 134.4 120 12.0 290 41.0 460 90.2 630 136.8 130 13.0 300 43.4 470 93.3 640 139.1 140 14.2 310 45.9 4S0 96.3 650 141.4 150 15.5 320 4S.4 490 99.3 660 143.7 160 16.9 330 51.0 500 102.3 670 145.9 170 IS.3 340 53.7 510 105.2 680 148.1 ISO 19.5 350 56.5 520 10S.1 690 150.2 190 21.4 360 59.4 530 110.9 700 152.3 200 23.1 370 62.4 540 113.7 710 154.4 210 24.S 380 65.4 550 116.4 720 156.4 220 26.6 390 6S.4 560 119.1 730 15S.5 230 2S.5 400 71.5 570 121.8 740 160.5 240 30.3 410 74.6 580 124.4 750 162.5 (i) The minimum freeboards for flush d~k steamers are obtained by an addition to the above Table at the rate of 1~ inches for every 100 feet of length. (ii) The freeboards at intermediate lengths are obtained by interpolation. (iii) Where c exceeds .68, the freeboard is multiplied by the c+ .68 factor 1.36 · (iv) Where D exceeds .~ the freeboard is increased by {D- ~}R inches, where R is 1~0 at lengths less than 390 feet, and 3 at 390 feet length and above.