Section 2 Construction, etc.

201. Scantlings of End Bulkheads and Boundary Walls

The thickness of plates and the scantlings of stiffeners of superstructure end bulkheads and deck- house boundary walls are not to be less than given in Table 15.1. Where the spacing of stiffeners S is different from 500 mm , the thickness of plates and the section modulus of stiffeners are not to be less than obtained from the Table 15.1 below, multiplied by S/500.

Table 15.1 Thickness of Plates and Scantlings of Stiffeners of Superstructure End Bulkheads and Deckhouse Boundary Walls

202. Closing Means for Access Openings and Height of Sills

1. The doors to be provided on the access openings in the end bulkheads of enclosed superstructures and those in the deckhouses protecting companionways giving access to the spaces under the free- board deck or the spaces in the enclosed superstructures are to be in accordance with the require- ments in the following (1) to (5):

(1) The doors are to be permanently and rigidly fitted up to the walls.

(2) The doors are to be rigidly constructed, to be of equivalent strength to that of intact wall and to be weathertight when closed.

(3) The means for securing weathertightness are to consist of gaskets and clamping devices or other

equivalent devices and to be permanently fitted up to the wall or the door itself.

(4) The doors are to be operated from the both sides of the wall.

(5) Hinged doors are, as a rule, to open outward.

2. The height of sills of access openings specified in the preceding 1 is to be at lease 380 mm above the upper surface of the deck.