✨ Marine Safety Regulations
3264
THE NEW ZEALAND GAZETTE.
[No. 77
Rule LXXI.—Depth for Freeboard (D).
In sailing ships having a greater rate of rise of floor than 1½ inches per foot, the vertical distance from the top of keel (Rule XXXIV), is reduced by half the difference between the total rise of floor at the half-breadth of the ship and the total rise at 1½ inches per foot. 2½ inches per foot of half-breadth is the maximum rate of rise for which a deduction is made.
Where the form at the lower part of the midship section is of a hollow character, or thick garboards are fitted, the depth is measured from the point where the line of the flat of the bottom continued inwards cuts the side of the keel.
The depth used with the Freeboard Table is to be taken as not less than L/12.
Rule LXXII.—Coefficient of Fineness (c).
The coefficient used with the Freeboard Table is to be taken as not less than 0·62 and not greater than 0·72.
Rule LXXIII.—Superstructure in Wood Ships.
In wood ships the construction and closing arrangements of superstructures for which deductions are made from the freeboard are to be to the satisfaction of the Assigning Authority.
Rule LXXIV.—Deductions for Superstructures.
Where the effective length of superstructures is 1·0 L, the deduction from the freeboard is 3 inches at 80 feet length of ship, and 28 inches at 330 feet length and above; deductions at intermediate lengths are obtained by interpolation. Where the total effective length of superstructures is less than 1·0 L, the deduction is a percentage obtained from the following Table:—
| Type of Superstructures. | Total Effective Length of Superstructures (E). | Line. |
|---|---|---|
| 0 | ·1 L | |
| All types without Bridge | % 0 | % 7 |
| All types with Bridge† | 0 | 7 |
† Where the effective length of Bridge is less than ·2 L, the percentages are obtained by interpolation between lines B and A. Percentages for intermediate lengths of superstructures are obtained by interpolation.
Rule LXXV.—Minimum Freeboards.
No addition to the freeboard is required for Winter freeboard, nor is a deduction permitted for Tropical freeboard.
An increase in freeboard of 3 inches is made for voyages across the North Atlantic North of latitude 36° N. during the winter months.
In computing the fresh water freeboard for a wood ship, the draught is measured from the lower edge of the rabbet of keel to the centre of the disc.
Rule LXXVI.—Freeboard Table for Sailing Ships.
Minimum Summer, Winter, and Tropical Freeboards for Iron and Steel Flush Deck Sailing Ships, which comply with the Standards laid down in the Rules.
| L. | Freeboard. | L. | Freeboard. | L. | Freeboard. | L. | Freeboard. |
|---|---|---|---|---|---|---|---|
| Feet. | Inches. | Feet. | Inches. | Feet. | Inches. | Feet. | Inches. |
| 80 | 9·2 | 140 | 21·3 | 200 | 35·4 | 270 | 53·5 |
| 90 | 11·0 | 150 | 23·5 | 210 | 37·9 | 280 | 56·3 |
| 100 | 12·9 | 160 | 25·8 | 220 | 40·4 | 290 | 59·1 |
| 110 | 14·9 | 170 | 28·2 | 230 | 42·9 | 300 | 61·9 |
| 120 | 17·0 | 180 | 30·6 | 240 | 45·5 | 310 | 64·7 |
| 130 | 19·1 | 190 | 33·0 | 250 | 48·1 | 320 | 67·6 |
| 260 | 50·8 | 330 | 70·5 |
(i) The freeboards at intermediate lengths are obtained by interpolation.
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VUW Te Waharoa —
NZ Gazette 1934, No 77
NZLII —
NZ Gazette 1934, No 77
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Rules for determining Maximum Load Lines of Merchant Ships
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