Ventilator coamings

Ventilator coamings
D.2.1 General requirements
D.2.1.1 The height of the ventilator coamings on the exposed freeboard deck, quarter deck and on
exposed superstructure decks in the range 0.25 L from F.P. is to be at least 900 mm, see Fig. 1.1.
D.2.1.2 On exposed superstructure decks abaft 0.25 L from F.P. the coaming height is not to be less
than 760 mm.
D.2.1.3 Ventilators of cargo holds are not to have any connection with other spaces.
D.2.1.4 The thickness of the coaming plates is to be 7.5 mm where the clear opening sectional area of
the ventilator coamings is 300 cm2 or less, and 10 mm where the clear opening sectional area exceeds
1600 cm2. Intermediate values are to be determined by direct interpolation. A thickness of 6 mm will generally
be sufficient within not permanently closed superstructures.