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[Cites 0, Cited by 0] [Section 28] [Entire Act]

Union of India - Subsection

Section 28(4) in The Merchant Shipping (Prevention of Pollution by Oil from Ships) Rules, 2010

(4)The requirements of sub-rule (1) shall be confirmed by calculations, which take into consideration the design characteristics of the ship, the arrangements, configuration and contents of the damaged compartments and the distribution, relative densities and thy free surface effect of liquids:Provided that the calculations shall be based on the following, namely:-
(a)account shall be taken of any empty or partially filled tank, the relative density of cargoes carried, as well as any outflow of liquids from damaged compartments;
(b)the permeabilities assumed for spaces flooded as a result of damage shall be as follows:
Spaces Permeabilities
Appropriate to stores 0.60
Occupied by accommodation 0.95
Occupied by machinery 0.85
Voids 0.95
Intended for consumable liquids 0 to 0.95*
Intended for other liquids 0 to 0.95*
(*the permeability of partially filled compartments shall be consistent with the amount of liquid carried in the compartment. Whenever damage penetrates a tank containing liquid, it shall be assumed that the contents are completely lost from that compartment and replaced by salt water up to the level of the of the final plane of equilibrium);
(c)the buoyancy of any superstructure directly above the side damage shall be disregarded and the unflooded parts of super structures beyond the extent of damage may be taken into consideration provided that they are separated from the damaged space by watertight bulkheads and the requirements of clause (a) sub rule 3 above in respect of these intact spaces are complied with and hinged watertight doors may be acceptable in watertight bulkheads in the superstructure;
(d)the free surface effect shall be calculated at an angle of heel of 5 degree for each individual compartment. The Director General may require or allow the free surface corrections to be calculated at an angle of heel grater than 5 degree for partially filled tanks;
(e)in calculating the effect of free surfaces of consumable liquids it shall be assumed that, for each type of liquid, at least one transverse pair or a single centerline tank has a free surface and the tank or combination of tanks to be taken into account shall be those where the effect of free surface is the greatest.