# The Fishing Vessels (Safety Provisions) Rules 1975, Paragraph 3


If the depth of the lifeboat amidships exceeds 45 per cent of the breadth, the depth employed in calculating the area of the amidship cross-section B shall be deemed to be equal to 45 per cent of the breadth, and the depth employed in calculating the areas of the quarter length sections A and C is obtained by increasing this last figure by an amount equal to 1 per cent of the length of the lifeboat:
Provided that in no case shall the depths employed in the calculations exceed the actual depths at these points.

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Source: https://www.legislation.gov.uk/uksi/1975/330/schedule/5/paragraph/3 (the official version)
Page: https://openlegislation.uk/fishing-vessels-safety-provisions-rules-1975/schedule-5/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.