2.2.1 A fore peak or collision
bulkhead is to be fitted which is to be watertight up to the bulkhead
deck. This bulkhead is to be located at a distance, in m, from the
forward perpendicular of not less than 5% of the length LS of
the ship and not more than 3m plus 5% of the length LS of
the ship.Where any part of the ship below the waterline extends
forward of the forward perpendicular, e.g. a bulbous bow, the distances
stipulated above are to be measured from a point either:
whichever gives the smallest measurement.Where the stem contour is concave above the deepest subdivision
load line, the forward end is to be taken as coincident with the
foreside of the stem, where the stem is the contour of the outer
surface of the hull at the forward end and excludes any appendages
except bulbous bow.
2.2.2 With the agreement of the Owner and Flag Authorities, the Society may, on a case by case basis, accept a distance from the collision bulkhead to the forward perpendicular FPLL greater than the maximum specified in [2.2.1], provided that subdivision and stability calculations show that, when the ship is in upright condition on full load summer waterline, flooding of the space forward of the collision bulkhead will not result in any part of the freeboard deck becoming submerged, or in any unacceptable loss of stability.
2.2.3 Where a long forward superstructure is fitted,
the fore peak or collision bulkhead on all ro-ro passenger ships
is to be extended weathertight to the next complete deck
above the bulkhead deck. The extension is to be so arranged as to preclude
the possibility of the bow door causing damage to it in the case
of damage to, or detachment of, a bow door.The extension need not be fitted directly above the bulkhead
below, provided all parts of the extension are not located forward
of the forward limit specified in [2.2.1].
Ramps not meeting the above requirements are to be disregarded as an extension of the collision bulkhead.
2.2.4 No doors, manholes or access openings are permitted
in the collision bulkhead below the margin line.
The collision bulkhead may be pierced below the margin line by not more than one pipe for dealing with fluid in the fore peak tank, provided that the pipe is fitted with a screwdown valve capable of being operated from above the bulkhead deck, the valve chest being secured inside the fore peak to the collision bulkhead. The Society may, however, authorise the fitting of this valve on the after side of the collision bulkhead provided that the valve is readily accessible under all service conditions and the space in which it is located is not a cargo space.
If the fore peak is divided to hold two different kinds of liquids the Society may allow the collision bulkhead to be pierced below the margin line by two pipes, each of which is fitted as required by the above paragraph, provided the Society is satisfied that there is no practical alternative to the fitting of such a second pipe and that, having regard to the additional subdivision provided in the fore peak, the safety of the ship is maintained.