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Updated:

Jan 29, 2026

Stability500

This course is a critical component of the Certificate of Competency for Deck Officers, providing the essential theoretical and practical knowledge required to ensure the safety and seaworthiness of a vessel. The curriculum focuses on the principles of hydrostatics and ship geometry to assess, calculate, and manage transverse (initial and large angle) and longitudinal stability, trim, and draught changes under all loading conditions, including damage scenarios.

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What You’ll Learn?

•Explain the fundamental principles of flotation and buoyancy, including Archimedes' Principle.
•Identify the key stability parameters and points, including the center of gravity ($G$), center of buoyancy ($B$), and metacentre ($M$).
•Calculate and control the initial stability of a vessel using the Metacentric Height ($GM$).
•Analyze the effect of shifting weights, adding/removing cargo and ballast, and the Free Surface Effect (FSE) on stability.
•Determine and manage the vessel's trim and draught changes.
•Apply knowledge of intact and damage stability criteria to ensure compliance with international regulations (SOLAS).
•Interpret and use ship's stability booklet, hydrostatic curves, and GZ curves.
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Meet Your Instructor

Capt. William Amanhyia
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Capt. William Amanhyia

I am a master mariner and a former shipmaster. An accomplished college lecturer with a Master of Science Degree in Maritime Management, specialized in the instruction of tertiary-level students within the maritime and logistics sectors. My career is distinguished by a strong track record of guiding students of mixed abilities through their academic journeys, leveraging effective classroom management and student support techniques to foster inclusive and productive learning environments. As a master mariner and former shipmaster, I bring practical experience and leadership to my teaching, seamlessly integrating complex regulatory and commercial concepts into accessible classroom learning and real-world applications.

In addition to my teaching credentials, I am a skilled researcher with multiple publications in academic and industry journals. I have actively contributed to scholarly writing and industry-academic collaborations, further enriching the quality of education and research outcomes. As a National Certificate of Competency Assessor, I am committed to maintaining high standards of assessment, moderation, and compliance. My dedication to mentoring, coaching, and talent development is evident in my ability to support and guide

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