What is the primary function of the stern tube seal assembly?
Direct Answer
Option D: Prevent seawater from entering the engine room and prevent lube oil from leaking into sea
Stern tube seal assemblies utilize positive pressure barriers and elastomeric rings to maintain a tight seal between the hull and propeller shaft tail. This critical boundary prevents external seawater ingress and stops internal lubricating oil from discharging overboard.
All Options
Detailed Explanation & Context
Stern tube seal assemblies utilize positive pressure barriers and elastomeric rings to maintain a tight seal between the hull and propeller shaft tail. This critical boundary prevents external seawater ingress and stops internal lubricating oil from discharging overboard.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
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