With reference to transverse watertight bulkheads, state EACH of the following: (a) FOUR reasons why these are an important part of the vessel’s structure;(4) (b) the positions of each of the FOUR most important watertight bulkheads;(4) (c) the reason why the foremost continuous bulkhead is of a stronger construction.(2)
(a) Reasons why transverse watertight bulkheads are an important part of the vessel’s structure (4)
Provide watertight subdivision – limit the spread of flooding in case of hull damage.
Contribute to vessel strength – add rigidity and overall structural integrity to the hull.
Fire protection – act as barriers to help contain fire and smoke between compartments.
Support machinery and equipment – offer stiff support for decks, pipelines, and heavy fittings.
(b) Positions of the FOUR most important watertight bulkheads (4)
Collision bulkhead – located a short distance aft of the bow (foremost bulkhead).
After peak bulkhead – situated forward of the stern tube to enclose the after peak tank.
Bulkhead forward of the machinery space – separates accommodation/cargo from engine room.
Bulkhead aft of the machinery space – separates engine room from cargo or passenger spaces.
(c) Reason why the foremost continuous bulkhead (collision bulkhead) is of a stronger construction (2)
It must withstand high water pressure and stresses in the event of bow damage or collision.
It is also exposed to slamming forces and heavy seas, requiring extra strength for safety.
