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RPSSR Exit Exam • Set 1 Question 17 of 30

In the concept of shiphandling, what would be the definition of shallow water

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Direct Answer

Option A: Water depth of less than twice a vessel’s draft

Shallow water effects significantly alter vessel hydrodynamic performance, squat, and steering control. Naval architecture and bridge resource management standards define shallow water as any depth less than twice the vessel's draft, where return flow velocity increases markedly.

All Options

A
Water depth of less than twice a vessel’s draft (Correct Answer)
B
Water depth of less than 1-1/2 times a vessel’s draft
C
Under keel clearance of twice a vessel’s draft
D
Under keel clearance of less than 10 feet

Detailed Explanation & Context

Shallow water effects significantly alter vessel hydrodynamic performance, squat, and steering control. Naval architecture and bridge resource management standards define shallow water as any depth less than twice the vessel's draft, where return flow velocity increases markedly.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Refresher Personal Safety & Social Responsibilities (RPSSR).

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