Merchant Shipping (Safety and Load Line Conventions) Act 1932

Freeboards.

RULE CII Computation of Freeboard.

When the Assigning Authority is satisfied that the foregoing requirements are fulfilled, the Summer freeboard may be computed from the Table for Tankers; all corrections except those for flush-deck steamers, detached superstructures, excess sheer, and winter voyages across the North Atlantic are to be made in accordance with Part III of the Rules.

RULE CIII Deduction for Detached Superstructures.

When the total effective length of superstructure is less than 1.0 L, the deduction is a percentage of that for a superstructure of length 1.0 L, and is obtained from the following table :—

TOTAL Effective Length of Superstructures.

	0	.1L	.2L	.3L	.4L	.5L	.6L	.7L	.8L	.9 L	1.0 L
	%	%	%	%	%	%	%	%	%	%	%
All types	0	7	14	21	31	41	52	63	75.3	87.7	100

RULE CIV Deduction for Excess Sheer.

Where the sheer is greater than the standard, the correction for excess sheer (see Rule LVII of Part III, Load Lines for Steamers) is deducted from the freeboard for all tankers. Rule LIX of Part III does not apply except that the maximum deduction for excess sheer is ½ inches at 100 feet and increases at the rate of ½ inches for each additional 100 feet in the length of the ship.

RULE CV Winter North Atlantic Freeboard.

The minimum freeboard for voyages across the North Atlantic, north of latitude 36° N., during the winter months, is the Winter Freeboard plus an addition at a rate of 1 inch per 100 feet in length.

RULE CVI Freeboard Table for Tankers.

L in Feet.	Freeboard in Inches
Ships above 600 feet are to be dealt with by the Administration.
190	21.5
200	23.1
210	24.7
220	26.3
230	28.0
240	29.7
250	31.5
260	33.3
270	35.2
280	37.1
290	39.1
300	41.1
310	43.1
320	45.1
330	47.1
340	49.2
350	51.3
360	53.5
370	55.7
380	57.9
390	60.2
400	62.5
410	64.9
420	67.4
430	69.9
440	72.5
450	75.1
460	77.7
470	80.2
480	82.7
490	85.1
500	87.5
510	89.8
520	92.1
530	94.3
540	96.5
550	98.6
560	100.7
570	102.7
580	104.6
590	106.5
600	108.4