Artikel 76

The propelling-machinery space includes the following items:
(a) Spaces below the top of the main space;
(b) Shaft-tunnels or trunks in screw ships, and escape trunks;
(c) Spaces between the top of the main space and the upper deck;
and may include:
(d) Spaces on or above the upper deck designated as light and air spaces.
Ad (a), (b) and (c). - These items include all spaces situated below the upper deck, which may be regarded as propelling-machinery spaces in accordance with the provisions of Articles 78 and 79. The “main space” is the space containing the principal appliances for propelling the ship other than those indicated under (b). Its “top” is the under side of the deck overhead. If, however, the space thus defined extends vertically to the under side of a break or a raised quarter-deck, the portion of the space situated within the superstructure shall be dealt with under item (d) (see Figures 100 and 101).
Ad (d). - This item includes light and air casings framed in for the admission of light and air to the boiler- and engine-room. It also includes all other spaces framed in for machinery which, in accordance with the provisions of Articles 78 and 79, may be regarded as propelling-machinery.1) For example, a portion of an escape trunk, situated on or above the upper deck, shall be dealt with under this Item (see Figure 102).
The inclusion in the propelling-machinery space of spaces under item (d) shall be subject to the conditions laid down in Article 77.