Clasification Society Rulefinder 2020 - Version 9.33 - Fix
Common Structural Rules - Common Structural Rules for Bulk Carriers and Oil Tankers, January 2019 - Part 1 General Hull Requirements - Chapter 2 General Arrangement Design - Section 2 Subdivision Arrangement - 2 Collision Bulkhead

2 Collision Bulkhead

2.1 Extent and position of collision bulkhead

2.1.1 A collision bulkhead is to be fitted on all ships and is to extend to the freeboard deck. It is to be located between 0.05 LLL or 10 m, whichever is less, and except as may be permitted by the Administration, 0.08 LLL or 0.05 LLL + 3 m, whichever is the greater, aft of the reference point, where the reference point is as defined in [2.1.2].

2.1.2 For ships without bulbous bows the reference point is to be taken where the forward end of LLL coincides with the forward side of stem, on the waterline which LLL is measured. For ships with bulbous bows, it is to be measured from the forward end of LLL a distance x forward; where x is to be taken as the lesser of the following:
  • a) Half the distance, from FPLL to the extreme forward end of the bulb extension.
  • b) 0.015 LLL.
  • c) 3.0 m.

2.2 Arrangement of collision bulkhead

2.2.1 In general, the collision bulkhead is to be in one plane; however, the bulkhead may have steps or recesses provided that they are within the limits prescribed in [2.1.1] and [2.1.2].

2.2.2 Doors, manholes, permanent access openings or ventilation ducts are not to be cut in the collision bulkhead below the freeboard deck. Where the collision bulkhead is extended above the freeboard deck, the number of openings in the extension is to be kept to a minimum compatible with the design and proper working of the ship. Reference is made to Ch 1, Sec 2, [2.1].

Parent topic: Section 2 Subdivision Arrangement
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