# METACENTRIC HEIGHT EXPERIMENT PDF

The Metacentric height of the ship plays an important role in setting the loading capacity and stability of the ship. The Initial metacentric height of the ship is determined by an inclining experiment after the ship is completely built. When a vertical line is drawn from B and B1, they intersect at a point known as metacentre of the ship. The metacentric height is the distance between the centre of gravity and metacentre of the ship i.

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The Metacentric height of the ship plays an important role in setting the loading capacity and stability of the ship. The Initial metacentric height of the ship is determined by an inclining experiment after the ship is completely built. When a vertical line is drawn from B and B1, they intersect at a point known as metacentre of the ship. The metacentric height is the distance between the centre of gravity and metacentre of the ship i.

GM and it is used to calculate the stability of the ship. To conduct this experiment, a special tool known as stabilograph is required. The tool consists of a heavy metal pendulum balanced on a knife edge and connected to a pointer to record the heel angle readings. Normally minimum of two stabilographs are used and are placed at maximum distance from each other i.

Four masses are placed on the ships deck, two on each side of the mid ship, placed away from the centre line. In the next step, the masses are moved one at a time until all four are on the same side, then all four on the other side, and lastly two on each side. The deflection on both the stabilographs is recorded for all the movement of mass and an average of these readings are used to determine metacentric height. Then by trigonometry,.

An ardent sailor and a techie, Anish Wankhede has voyaged on a number of ships as a marine engineer officer. He loves multitasking, networking, and troubleshooting. He is the one behind the unique creativity and aesthetics at Marine Insight. Hey i afraid to inform that i am interested in to the sea life can you please update any clip of how the stabilograph works to my mail id which i have mentioned above thanks…………..

Thanks a lot for the notes. In that theory is the application of tan function is correct??? Or applying sin function would be better??? Pls respond to me. Thank you. Reading this publication reminds me of my days in class, it refreshes my memory and gives me better understanding.

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## Metacentric height

The metacentric height GM is a measurement of the initial static stability of a floating body. It is calculated as the distance between the centre of gravity of a ship and its metacentre. A larger metacentric height implies greater initial stability against overturning. The metacentric height also influences the natural period of rolling of a hull, with very large metacentric heights being associated with shorter periods of roll which are uncomfortable for passengers. Hence, a sufficiently, but not excessively, high metacentric height is considered ideal for passenger ships. When a ship heels rolls sideways , the centre of buoyancy of the ship moves laterally.

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## METACENTRIC HEIGHT AND STABILITY

A bench mounting apparatus to determine the stability of a pontoon with its centre of gravity metacentric height and metacentre at various heights. Determination and analysis of the stability of floating bodies, such as ships, rafts and pontoons, is important throughout many branches of engineering. This experiment allows students to determine the stability of a pontoon with its centre of gravity at various heights. They can then compare this to predictions calculated from theory. The experiment consists of a rectangular pontoon floating in water.