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Bengal Presidency - Section

Section 65 in The Calcutta Port Rules, 1943

65. Method of measurement.

- Every flat or boat shall for the purpose of these rules be measured
(i)for Cubic Capacity by the formula Lx Bx Dx K= Cubic Capacity where L is the length in metres measured from the inside of the stem post to the inside of the stern post :
B is the greatest breadth in metres measured from side to side inside the ceiling planks or inside the frames whichever measurement is less;D is the greatest depth in metres measured from a line extended from side to side across the uppermost continuous strakes to the upper side of the floor ceiling plank or to the upper side of the floor whichever measurement is less;K is constant dependent on the type of flat or boat and taken from the following table-Class I
(a)Flush decked, square built and open boats and flats-K=0.9
(b)Bazar boats where the brake forward and aft does not exceed 23 cros- K=0.8
(c)Bazar boats where the brake forward and aft exceeds 23 cros-K=0.7.
Class II - Open country boats known as
(a)Jolly boats or powcoes-K=0.9
(b)Hollahax-K=0.83
(c)Bhurs and pensways-K=0.8
(d)Dinghees, Bowleahs and Green boats-K=.064
(e)Chotes-K=0.63:
Provided that (i) for straw boats Capacity Cubic Capacity shall be measured by the same formula in which L and K are taken as above, andB is the breadth in metres measured inside the ceiling planks or inside the frames, whichever measurement is the less, under the deck beam amidships.D is the depth in metres measured from the underside of the deck beam amidships to the upper side of the floor ceiling planks or to the upper side of the keelson whichever measurement is the less;
(ii)For Freeboard
(a)by taking, if it is a decked or open flat or boat of iron and steel, the figure in the column headed "Fl" or "F2" as the case may be corresponding to the depth of the vessel (D) in accordance with the following table, the correction (C) being applied where the length (L) does not correspond with the depth.
D I F1 F2 C
m m cm cm cm
1.68 16.76 22 30 1.905
1.83 18.29 24 32 1.905
1.98 19.81 27 36 1.905
2.13 21.34 29 39 1.905
2.29 22.86 32 43 1.905
2.44 24.38 35 46 1.905
2.59 25.91 37 49 2.223
2.74 27.43 40 53 2.223
2.90 28.96 42 56 2.223
3.05 30.48 45 59 2.223
3.20 32.00 47 63 2.223
3.35 33.53 50 66 2.223
3.51 35.05 53 71 2.540
3.66 36.58 57 76 2.540
3.81 38.10 60 80 2.540
3.96 39.62 64 84 2.540
4.11 41.15 68 90 2.540
4.27 42.67 70 93 2.540
D=Detph,L=Length,F1=Freeboard for decked flats or boats of iron or steel,F2=Freeboard for open flats or boats or iron or steel,C=Correction to be applied to the freeboard for every 3.05 metres difference in length,
(b)by taking if it is wooden boat either square built or country built, or a composite built boat, 8 cms, for every 30 cms. depth of hold, as measured under clause (i) above.
(iii)for passengers by dividing the superficial area in square metre of the deck space available for passengers by 0.5574 and counting, if carried, two children below the age of 12 years or 74.64 kgs. weight of luggage as the equivalent of one passenger:
Provided that for boats belonging to private firms or companies and used exclusively for the conveyance of their employees, the diviser shall be 0.3716 instead of 0.5574,
(iv)for passengers and Cargo under clauses (i) and (ii) above.