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9C. Information on stability during loading
(1) The owner of every ship to which this regulation applies shall ensure that the master is provided with information relating to its stability during the process of loading and unloading. This information shall be included in the ship’s stability information book.
(2) Where any alterations are made or changes occur to the ship so as materially to affect the information supplied to the master in accordance with subregulation (1), amended information shall be provided.
(3) The information provided pursuant to subregulations (1) and (2) shall be kept on board the ship at all times in the custody of the master.
(L.N. 138 of 1994)

9D. Stability and freeboard during loading and unloading
The master shall use the information provided in accordance with regulation 9C and, when necessary, make calculations or cause calculations to be made in order to ensure that the process of loading and unloading is carried out safely; in particular, he shall ensure that—
(a) the ship has adequate stability; and
(b) the freeboard at any door giving access to the hull or to an enclosed superstructure is sufficient to prevent the entry of water.
(L.N. 138 of 1994)

9E. Recording of draught, trim and freeboard prior to departure
(1) On completion of the loading of the ship and before it proceeds on a voyage, the master or an officer appointed for the purpose by the master shall ascertain—
(a) the ship’s draught at the bow and at the stern;
(b) the trim of the ship by the bow or the stern; and
(c) the vertical distance from the waterline to the appropriate subdivision load line mark on each side of the ship.
(2) The draughts, trim and the vertical distances ascertained in accordance with subregulation (1) shall be recorded by the master or such officer as the case may be in the official log book.
(L.N. 138 of 1994)

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9F. Calculation of stability prior to departure
(1) On completion of the loading of a ship of Class I, Class II or Class II(A) and before the ship proceeds on a voyage the master shall cause the vertical position of the ship’s centre of gravity relative to its keel (KG), or its transverse metacentric height (GM), whichever is appropriate for the ship, to be calculated.
(2) Where the calculation is made, the actual weights of goods vehicles and other items of cargo shall be used. For items not required to be so weighted, the declared weights or weights estimated as accurately as possible shall be used.
(3) The calculation shall be made using an on-board loading and stability computer, or an approved shore-based loading and stability computer system, or by such other means as will enable accurate results to be obtained. The method by which the calculation is made shall be in accordance with Merchant Shipping Notice No. M1413.
(4) The master shall record the result of the calculation in the official log book.
(5) Where the calculation is made by means of a shore-based loading and stability computer system, a print-out of the calculation shall be presented to the master before the ship proceeds on its voyage. It shall be the duty of the person responsible for that system to ensure that the calculations are substantially correct.
(6) A full record of the calculation or a copy thereof, shall be retained on the ship for at least one calendar month after the calculation is made and shall be made available for inspection at any time during that period.
(L.N. 138 of 1994)

9G. Permissible standard of stability to be recorded
Before a ship of Class I, Class II or Class II(A) proceeds on a voyage the master shall cause the maximum permissible KG, or the minimum permissible GM, whichever is appropriate to the ship, to be determined and recorded in the official log book.
(L.N. 138 of 1994)

9H. Condition of loading prior to departure to be satisfactory
Before a ship of Class I, Class II or Class II(A) proceeds on a voyage the master shall ensure that the condition of loading of the ship as recorded in accordance with regulations 9E(2) and 9F(4) is within the permissible standard of stability determined in accordance with regulation 9G and satisfies all the relevant requirements prescribed in the stability information book.
(L.N. 138 of 1994)

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9I. Draught marks and automatic draught gauge system
(1) Every ship of Class II shall be provided with a reliable automatic draught gauge system, complying with the requirements of Merchant Shipping Notice No. M1413.
(2) (a) Every ship of Class I or Class II(A) engaged on services which afford only short periods in port or where insufficient lighting is available during periods of darkness, or which include the use of berths exposed to adverse weather, shall be provided with a reliable automatic draught gauge system as prescribed in subregulation (1).
(b) Every other ship of Class I or Class II(A) shall be provided with such an automatic draught gauge system except where the draught marks are located where they can be easily read.
(L.N. 138 of 1994)

10. Intact stability
(1) Every ship to which this Part applies shall, in all probable loading conditions, satisfy the following stability criteria after due correction for the effect of free surface of liquids in tanks—
(a) the area under the curve of righting levers (GZ curve) shall not be less than—
(i) 0.055 metre-radian up to an angle of 30o;
(ii) 0.09 metre-radian up to an angle of either 40o or the angle at which the lower edges of any openings in the hull, superstructures or deckhouses, being openings which cannot be closed weathertight, are immersed if that angle be less;
(iii) 0.03 metre-radian between the angles of heel 30o and 40o or such lesser angle as is referred to in subparagraph (ii); (E.R. 3 of 2022)
(b) the righting lever (GZ) shall be at least 0.20 metre at an angle of heel equal to or greater than 30o;
(c) the maximum righting lever (GZ) shall occur at an angle of heel not less than 30o;
(d) the initial transverse metacentric height shall not be less than 0.15 metre.
(2) Where it is not possible, due to the particular design or operating conditions of a particular ship, to comply with the above criteria, the Director may permit the application of such alternative criteria as he is satisfied gives a standard of stability at least as effective as that specified in subregulation (1).

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12. Ballasting
In every ship to which this Part applies, when ballasting with water is necessary, the water ballast shall not in general be carried in tanks intended for oil fuel. In ships in which it is not practicable to avoid putting water in oil fuel tanks, oily-water separator equipment to the satisfaction of the Director shall be fitted, or an alternative means acceptable to him shall be provided for disposing of the oily-water ballast.

13. Construction of watertight bulkheads, etc.
(1) In every ship to which this Part applies every portion of the ship required by these regulations to be watertight shall be constructed in accordance with such of the requirements of Schedule 4 as apply to it.
(2) In every such ship all tanks forming part of the structure of the ship and used for the storage of oil fuel or other liquids including double bottoms, peak tanks, settling tanks and bunkers shall be of a design and construction adequate for that purpose.