(1) Strength and construction of hull, superstructures,
deckhouses, machinery casings, companionways and any other structures
and vessel's equipment shall be sufficient to withstand all foreseeable
conditions of the intended service and shall be to the satisfaction
of the Administration.
(2) The hull of vessels intended for operation
in ice shall be strengthened in accordance with the anticipated conditions
of navigation and area of operation.
(3) Bulkheads, closing devices and closures of
openings in these bulkheads, as well as methods for their testing
shall be in accordance with the requirements of the Administration
Vessels constructed of material other than wood shall be fitted with
a collision bulkhead and at least with watertight bulkheads bounding
the main machinery space. Such bulkheads shall be extended up to the
working deck. In vessels constructed of wood such bulkheads, which
as far as practicable shall be watertight, shall also be fitted.
(4) Pipes piercing the collision bulkhead shall
be fitted with suitable valves operable from above the working deck
and the valve chest shall be secured at the collision bulkhead inside
the forepeak. No door, manhole, ventilation duct or any other opening
shall be fitted in the collision bulkhead below the working deck.
(5) Where a long forward superstructure is fitted,
the collision bulkhead shall be extended weathertight to the deck
next above the working deck. The extension need not be fitted directly
over the bulkhead below provided it is located within the limits given
in regulation I/2(22) and the
part of the deck which forms the step is made effectively weathertight.
(6) The number of openings in the collision bulkhead
above the working deck shall be reduced to the minimum compatible
with the design and normal operation of the vessel. Such openings
shall be capable of being closed weathertight.
(7) In vessels of 75 m in length and over a watertight
double bottom shall be fitted as far as practicable, between the collision
bulkhead and the afterpeak bulkhead.