Computation for freeboard.

(a) The minimum summer freeboards must be computed in accordance with §§ 42.20-5 (a) and (b), 42.20-13, 42.20-15, 42.20-20, 42.20-25, 42.20-30, 42.20-35, 42.20-60, and 42.20-65, except that § 42.20-60 is modified by substituting the percentages in table 42.25-20(a) for those given in § 42.20-60: Table 42.25-20( a )—Percentage of Deduction for Superstructure [Total Effective Length of Superstructure] 0 0.1 L 0.2 L 0.3 L 0.4 L 0.5 L 0.6 L 0.7 L 0.8 L 0.9 L 1.0 L Percentage of deduction for all types of superstructure 1 20 31 42 53 64 70 76 82 88 94 100 1 Percentages at intermediate lengths of superstructures shall be obtained by linear interpolation. (b) The winter timber freeboard shall be obtained by adding to the summer timber freeboard one thirty-sixth of the molded summer timber draft. (c) The winter North Atlantic timber freeboard shall be the same as the winter North Atlantic freeboard prescribed in § 42.20-75(d)(1). (d) The tropical timber freeboard shall be obtained by deducting from the summer timber freeboard one forty-eighth of the molded summer timber draft. (e) The fresh water timber freeboard shall be computed in accordance with § 42.20-75(e) (1) or (2) based on the summer timber load waterline. [CGFR 68-60, 33 FR 10067, July 12, 1968, as amended by CGFR 68-126, 34 FR 9016, June 5, 1969; CGD 79-153, 48 FR 38650, Aug. 25, 1983]