Exam Question
Explain the following:
(a) sub division; (4)
(b) margin line (4)
(c) floodable length; (4)
(d) watertight bulkhead penetration (4)
Class 4 (4th Engineer)
SC&S
📅 Jan 2026
Reference Answer
### (a) Subdivision
**1. Definition:**
Subdivision is the method of dividing a ship's hull into multiple smaller, watertight compartments using transverse bulkheads and decks. The primary purpose is to limit the extent of flooding if the hull is breached, thereby preserving sufficient buoyancy and stability for the ship to remain afloat and upright in a damaged condition.
**2. Regulatory Framework (SOLAS Ch II-1):**
**1. Definition:**
Subdivision is the method of dividing a ship's hull into multiple smaller, watertight compartments using transverse bulkheads and decks. The primary purpose is to limit the extent of flooding if the hull is breached, thereby preserving sufficient buoyancy and stability for the ship to remain afloat and upright in a damaged condition.
**2. Regulatory Framework (SOLAS Ch II-1):**
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