Class 4 (4th Engineer) SC&S 📅 Feb 2024

Exam Question

(a) State why cargo ships must have a collision bulkhead. (6)

(b) A bilge holding tank of 5m length, 3m width and 1.8m depth has water of density 1.020 t/m3 upto a sounding of 1.3m and oil of density 0.86 t/m3 is floating on top of water upto an ullage of 0.3m. Calculate the mass of water and oil in the tank. (10)

Reference Answer

### Part (a): Purpose and Regulations for Collision Bulkheads (6 Marks)
A collision bulkhead is a critical structural and safety feature mandated on cargo ships by international regulations. Its primary purpose is to enhance the survivability of the vessel following a bow collision.
**1. Purpose and Function:**
* **Damage Containment:** The primary function is to limit the extent of flooding to the foremost compartment of the ship, the forepeak tank, in the event of a head-on or bow collision.

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