Basic Metacentric Height
Product Code : EL-FMLE-10648
QUICK ANSWER: The Basic Metacentric Height apparatus is used to determine the metacentric height of a ship model under load and unload conditions on a flat-bottomed vessel, demonstrating how a varying metacenter produces stable or unstable equilibrium. It consists of a plastic rectangular floating pontoon whose centre of gravity is varied by an adjustable weight that slides and can be clamped in any position on a vertical mast, with a plumb bob suspended from the mast indicating the angle of heel on a calibrated scale; a weight with lateral adjustment varies the degree of heel to determine the pontoon's stability. The apparatus can measure angles of heel up to ±13°, corresponding to a ±90mm linear dimension, and does not require a separate water tank since it can be used on the hydraulics bench by filling the volumetric tank.
The metacenter of this apparatus can be varied to produce stable and unstable equilibrium. The equipment consists of a plastic rectangular floating pontoon, the centre of gravity of which can be varied by an adjustable weight that slides and can be clamped in any position on a vertical mast, with a single plumb bob suspended from the mast to indicate the angle of heel on a calibrated scale. A weight with lateral adjustment enables the degree of heel to be varied and hence the stability of the pontoon to be determined, and the equipment does not require a separate water tank as it may be used on the hydraulics bench by filling the volumetric tank.
The rectangular pontoon's centre of gravity can be moved sideways by moving the horizontal jockey weight, and vertically via the adjustable vertical weight on the mast, with the tilt angle indicated by the plumb bob on the attached scale. This is used to determine the metacentric height of the floating body and how this height varies with tilt angle.
FEATURES:
This apparatus is used to determine the metacentric height of a ship model under load and unload condition, (flat bottomed vessel).
This apparatus consists of:
A tank of size 60x60x30cm fitted with piezometer tube to measure the level of water.
Transparent sheet is provided on the front of tank.
A pointer to measure the angle of heel up to +/-15 Degree.
A cross bar arrangement with the provision of angling movable weights at known distance from the vertical axis through C.G.
Additional five hanging weights (50 gm Each) are provided.
Rectangular floating pontoon with mast.
Variable center of gravity via movable weights (transverse and vertical).
Clinometer indicates angle of heel.
Educational software available as an option.
Determining the center of gravity of the pontoon.
Determining the metacentric height and from this the position of the metacenter for the pontoon.
Varying the metacentric height with angle of heel.
SPECIFICATIONS:
Max. Angle of heel: ±13°
Corresponding linear dimension: ±90mm
Pontoon dimensions:
Length: 350mm
Width: 200mm
Overall height: 475mm
DIMENSIONS AND WEIGHT:
L x W x H: 600 x 450 x 450 mm
Weight: 30kg
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Last Updated: September 2026
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