(a) To provide for buoyancy and stability after
collision or other damage, ships shall have sufficient intact ability
and be as efficiently subdivided as is possible having regard to the
nature of the service for which they are intended.
(b) The subdivision of a ship is considered sufficient
if:
-
(i) the stability of the ship in damaged condition
meets the requirements of Regulation
5; and
-
(ii) the attained Subdivision Index A according
to Regulations 6 and 7 is not less than the required
Subdivision Index R calculated in accordance with paragraph (c) of
this Regulation.
(c) The degree of subdivision is determined by
the required Subdivision Index R, as follows:
Where:
|
N
|
= |
N
1 + 2N
2
|
|
N
1
|
= |
number of persons for whom life-boats are provided. |
|
N2
|
= |
number of persons (including officers and crew) that the ship
is permitted to carry in excess of N
1.
|
(d) Where the conditions of service are such that
compliance with paragraph (b) of this Regulation on the basis of N = N
1 + 2N
2 is impracticable
and where the Administration considers that a suitably reduced degree
of hazard exists, a lesser value of N may be taken but in no case
less than N = N
1+N
2.