(1) The minimum freeboard in summer shall be the
freeboard derived from the tables in Regulation
28 as modified by the corrections in Regulations
27, as applicable, 29, 30, 31, 32, 37, 38 and, if applicable, 39.
(2) The freeboard in salt water, as calculated
in accordance with paragraph (1) of this Regulation, but without the
correction for deck line, as provided by Regulation
32, shall not be less than 50 millimetres (2 inches). For ships
having in position 1 hatchways with covers which do not comply with
the requirements of Regulations 15 (7), 16 or 26,
the freeboard shall be not less than 150 millimetres (6 inches).
(3) The minimum freeboard in the Tropical Zone
shall be the freeboard obtained by a deduction from the summer freeboard
of one forty-eighth of the summer draught measured from the top of
the keel to the centre of the ring of the load line mark.
(4) The freeboard in salt water, as calculated
in accordance with the paragraph (3) of this Regulation, but without
the correction for deck line, as provided by Regulation
32, shall not be less than 50 millimetres (2 inches). For ships
having in position 1 hatchways with covers which do not comply with
the requirements of Regulations 15 (7), 16 or 26,
the freeboard shall be not less than 150 millimetres (6 inches).
(5) The minimum freeboard in winter shall be the
freeboard obtained by an addition to the summer freeboard of one forty-eighth
of summer draught, measured from the top of the keel to the centre
of the ring of the load line mark.
Winter North Atlantic Freeboard
(6) The minimum freeboard for ships of not more
than 100 metres (328 feet) in length, which enter any part of the
North Atlantic defined in Regulation 52 (Annex
II) during the winter seasonal period, shall be the winter freeboard
plus 50 millimetres (2 inches). For other ships, the Winter North
Atlantic Freeboard shall be the winter freeboard.
(7) The minimum freeboard in fresh water of unit
density shall be obtained by deducting from the minimum freeboard
in salt water:
where
Δ |
= |
displacement
in salt water in tons at the summer load waterline, |
T |
= |
tons per centimetre
(inch) immersion in salt water at the summer load waterline. |
(8) Where the displacement at the summer load
waterline cannot be certified, the deduction shall be one forty-eighth
of summer draught, measured from the top of the keel to the centre
of the ring of the load line mark.