Section 34
of Merchant Shipping (Safety Convention) Regulations, 2003
Section 34
(1)
Ships shall be as efficiently subdivided as is possible having regard to the nature of the service for which they are intended. The degree of subdivision shall vary with the length of the ship and with the service, in such manner that the highest degree of subdivision corresponds with the ships of greatest length, primarily engaged in the carriage of passengers.
543
Factor of subdivision.
\2)
{a)
The maximum permissible length of a compartment having its centre at any point in the ship's length is obtained from the floodable length by multiplying the latter by an appropriate factor called the factor of sub-division.
{b) The factor of subdivision shall depend on the length of the ship, and for a given length shall vary according to the nature of the service for which the ship is intended. It shall decrease in a regular and continuous manner-
(i)
as the length of the ship increases; and
(ii)
from a factor A, applicable to ships primarily engaged in the carriage of cargo, to a factor B, applicable to ships primarily engaged in the carriage of passengers.
{c)
The variations of the factors A and B shall be expressed by the following formulae (I) and (II) where Lis the length of the ship in metres 58.2
A = -- + 0.18 (L = 131 and upwards) ........................... (!)
L- 60 30.3
B = -- + 0.18 (L = 79 and upwards) ........................... (II)
L- 42
Criterion of service.
(3)
{a}
For a ship of given length the appropriate factor of subdivision shall be determined by the criterion of service numeral (hereinafter referred to as the criterion numeral) as given by the following formulae (III) and (IV)
where-C5
the Criterion Numeral;
L the length of the ship in metres;
M the volume of the machinery space in cubic metres, as defined in regulation 25; with the addition thereto of the volume of any permanent oil fuel bunkers which may be situated above the inner bottom and forward of or abaft the machinery space;
P the whole volume of the passenger spaces below the margin line in cubic metres;
V the whole volume of the ship below the margin line in cubic metres;
P1 = KN where -
= the nl.lmber of passengers for which the ship is to be certified; and
K
"" 0.056L.
{b)
Where the value of KN is greater than the sum of P and the whole volume of the actual passenger spaces above the margin line, the figure to be taken as P 1 is that sum or two-thirds KN, whichever is the greater.
544
545 27th. DECEMBER, 2003
When P 1 is greater than P -
72 ____ .............................................. (111)
and in other cases -
M + 2P
C5 72
················:······························(IV)
v
{c)
For ships not having a continuous bulkhead deck, the volumes are to be taken up to the actual margin lines used in determining the floodable lengths.
Rules for subdivision of ships other than those covered·by sub-regulation (5).
(4)
{a)
The subdivision abaft the forepeak of ships of 131 metres in length and upwards having a criterion numeral of 23 or less shall be governed by the factor A given by formula (I); of those having a criterion numeral of 123 or more by the factor B given by formula (II); and of those having a criterion numeral between 23 and 123 by the factor F obtained by linear interpolation between the factors A and B, using the formula-
(A - B) (Cs - 23)
F =A-
....................................... (V)
100
Nevertheless, where the criterion numeral is equal to 45 or more and simultaneously the computed factor of subdivision as given by formula
(V)
is 0.65 or less, but more than 0.50, the subdivision abaft the fore·
peak shall be governed by the factor 0.50.
{b)
Where the factor F is less than 0.40 and it is shown to the satisfac-tion of the Director to be impracticable to comply with the factor F in the machinery compartment of the ship, the subdivision of such compartment may be governed by an increased factor1 which shall not exceed 0.40.
{c)
The subdivision abaft the forepeak of ships of less than 131 metres but not less than 79 metres in length having a criterion numeral equal to S, where-
3,574-251
s =
13
BRUNEI DARUSSALAM GOVERNMENT GAZETTE shall be governed by the factor unity; of those having a criterion numeral of 123 or more by the factor B given by the formula (II); of those having a criterion numeral between S and 123 by the factor F obtained by linear interpolation between unity and the factor B using the formula -
(1
(C8 -
SJ
F
1 - ----- ....................................... (VI)
123- s
{d) The subdivision abaft the forepeak of ships of less than 131 metres but not less than 79 metres in length and having a criterion numeral less than S, and of ships of less than 79 metres in length shall be governed by the factor unity, unless, in either case, it is shown to the satisfaction of the
Director to be impracticable to comply with this factor in any part of the ship, in which case he may allow such relaxation as may appear to be justified having regard to all the circumstances.
{e)
Paragraph {d) shall apply also to ships of whatever length, which are to be certified to carry a number of passengers exceeding 12 but not exceeding
L2
--,or 50, whichever is the less.
650
Special subdivision standards for ships complying with regulation 146(1J(bJ.
(5)
{a}
In the case of ships primarily engaged in the carriage of passengers, the subdivision abaft the forepeak shall be governed by a factor of 0.50 or by the factor determined according to sub-regulations (3) and (4), if less than 0.50.
-··
{b)
In the case of such ships less than 91.5 metres in length, if the Director is satisfied that compliance with such factor would be impracti-cable in a compartment, he may allow the length of that compartment to be governed by a higher factor, provided the factor used is the lowest that is practicable and reasonable in·the circumstances.
{c)
Where, in the case of any ship whether less than 91.5 metres or not, the necessity of carrying appreciable quantities of cargo makes it impracticable to require the subdivision abaft the forepeak to be governed by a factor not exceeding 0.50, the standard of subdivision to be applied shall be determined in accordance with the following sub-paragraphs (i)
to {v), subject to the condition that where the Director is satisfied that insistence on strict compliance in any respect would be unreasonable, he may allow such alternative arrangement of the watertight bulkheads as 546
547 27th. DECEMBER, 2003
appears to be justified on merits and will not diminish the general effective-ness of the subdivision -
(i)
sub-regulation (3) relating to the criterion numeral shall apply with the exception that in calculating the value of P 1 for berthed passengers, K is to have the value defined in sub-regulation (3L or 3.5 m 3, whichever is the greater, and for unberthed passengers, K is to have the value 3.5 m 3;
(ii)
the factor B in sub-regulation (2) shall be replaced by the factor BB determined by the following formula 17.6
BB =
+ 0.20 (L
55 metres and upwards);
L
33
(iii)
the subdivision abaft the forepeak of ships 131 metres in length and upwards having a criterion numeral of 23 or less shall be governed by the factor A given by formula (I) in sub-regulation (2); of those having a criterion numeral of 123 or more by the factor BB given by the formula in sub-paragraph
(ii)
; and of those having a criterion numeral between 23 and 123 by the factor F obtained by linear interpolation between the factors A and BB, using the formula-
(A-BB) (C8 - 23)
F=A-------
100
except that if the factor F so obtained is less than 0.50, the factor to be used shall be either 0.50 or the factor calculated according to paragraph {a} of sub-regulation (4), whichever is the smaller;
(iv)
the subdivision abaft the forepeak of ships less than 131
metres but not less than 55 metres in length having a criterion numeral equal to S1 where -
3,712- 25L
19
shall be governed by the factor unity; of those having a criterion numeral of 123 or more by the factor BB given by the formula in sub-paragraph (ii); of those having a criterion numeral between S1 and 123 by the factor F obtained by
BRUNEI DARUSSALAM GOVERNMENT GAZETTE linear interpolation between unity and the factor BB using the formula
F = 1 - -------
except that in either of the 2 latter cases, if the factor so obtained is less than 0.50, the subdivision may be governed by a factor not exceeding 0.50;
(v)
the subdivision abaft the forepeak of ships less than 131
metres but not less than 55 metres in length and having a criterion numeral less than S1 and of all ships less than 55
metres in length shall be governed by the factor unity, unless it is shown to the satisfaction of the Director to be impracti-cable to comply with this factor in particular compartments, in which event he may allow such relaxations in respect of those compartments as appear to be justified, having regard to all the circumstances, provided that the aftermost compart-ment and as many as possible of the forward compartments
(between the forepeak and the after end of the machinery space) shall be kept within the floodable length.
fdJ
The special provisions regarding permeability given in sub-regula-tion (4) of regulation 33 shall be employed when calculating the floodable length curves.
{e} Where the Director or authorised organisation is satisfied that, having regard to the nature and conditions of the intended voyages compliance with the other provisions of this Chapter and of Chapter II-2 is sufficient, the require':i:nents of this sub-regulation need not be complied with.
Special requirements concerning passenger ship subdivision.