46 C.F.R. § 42.25-20 Computation for freeboard.
Title 46 - Shipping
(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: (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]
Title 46: Shipping
PART 42—DOMESTIC AND FOREIGN VOYAGES BY SEA
Subpart 42.25—Special Requirements for Vessels Assigned Timber Freeboards
§ 42.25-20 Computation for freeboard.
Table 42.25-20(a)_Percentage of Deduction for Superstructure [Total Effective Length of Superstructure]---------------------------------------------------------------------------------------------------------------- 0 0.1L 0.2L 0.3L 0.4L 0.5L 0.6L 0.7L 0.8L 0.9L 1.0L----------------------------------------------------------------------------------------------------------------Percentage of deduction for all 20 31 42 53 64 70 76 82 88 94 100 types of superstructure \1\.......----------------------------------------------------------------------------------------------------------------\1\ Percentages at intermediate lengths of superstructures shall be obtained by linear interpolation.
