What are regulations for Spacing and number of Bulkhead on ship as per SOLAS ?

Spacing and the number of bulkheads:

  • The number of transverse bulkheads in a ship depends on her length and the position of the machinery space.
  • The minimum bulkheads fitted on a ship are asf:
  • The forward-most transverse water tight bulkhead is called collision bulkhead and is designed to protect the vessel in case of a collision .It is usually fitted between 5% of the length of the vessel(or 10 mtrs, whichever is less) and 8% of the length of the vessel from the forward perpendicular.
  • In practice this bulkhead is placed as far forward as possible ( without violating the above requirements) so that as much cargo carrying space is available.
  • The space forward of this bulkhead is the Fore Peak Tank,Abaft this bulkhead is the first hold or tank.
  • The After Peak Bulkhead is situated aft and serves to enclose the stern tube in a watertight compartment.
  • Other bulkheads are fitted on the forward and after sides of the machinery spaces .If the machinery space is aft ,then either the afterpeak bulkhead or the bulkhead abaft the machinery space can be dispensed with.
  • The cargo spaces are also sub divided uniformly so that the vessel can survive being bilged anywhere along her length.
  • Example a ship of 105 m shall have 5 or 6 bulkheads depending of position of machinery spaces.
  • A ship of 145 m shall be fitted with 7 or 8 bulkheads.
  • The sub division rules specify the separation and number of bulkheads to be fitted on a ship
Number Of Bulkheads(Cargo Ship)
Length of Ship(Mtrs)/   Number Of Bulkheads Midship M/S Aft M/S

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