View all text of Subpart 42.25 [§ 42.25-1 - § 42.25-20]
§ 42.25-20 - 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(
[Total Effective Length of Superstructure]
| 0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 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.