Seawater Displacement
Seawater Displacement - Related Videos
08:23
Seawater Sampling and Collection
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Cited by 13 •
2009
This video documents methods for collecting coastal marine water samples and processing them for various downstream applications including biomass concentration, nucleic acid purification, cell abundance, nutrient and trace gas analyses.
05:58
Large Volume (20L+) Filtration of Coastal Seawater Samples
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Cited by 16 •
2009
This video documents large volume (≥20 L) filtration of microbial biomass, ranging between 0.22μm and 2.7μm in diameter, from the water column.
04:21
Small Volume (1-3L) Filtration of Coastal Seawater Samples
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Cited by 7 •
2009
This video documents small volume (~1 L) filtration of microbial biomass from the water column.
03:07
Selective Enrichment and Isolation of Oil-Degrading Marine Bacteria from Seawater Samples
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2025
Source: Villela, H. D. M., et al. Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation. J. Vis. Exp. (2019)This video demonstrates the selective isolation of oil-degrading marine bacteria by enriching seawater samples on oil-based media, enabling the recovery of pure strains with potential applications in crude oil bioremediation and environmental cleanup.
01:31
Position and Displacement
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2023
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
FAQs
The displaced seawater generates an upward buoyant force equal to the weight of that displaced water. A vessel’s floating capacity therefore depends on how much seawater its immersed form moves aside relative to the vessel’s weight. Engineering calculations use this relationship to evaluate whether a design can float and to assess how added or removed load changes immersion.
These factors determine how much of an object occupies space below the water surface. A change in shape can alter the underwater volume, while density affects the relationship between the object’s weight and the volume needed to support it. Immersion depth also changes the occupied underwater volume, influencing displacement and the resulting buoyant response.
Changing loads can alter a vessel’s immersion depth and therefore the volume of seawater displaced. Variations in seawater conditions also affect displacement-based assessments of floating capacity and hydrostatic performance. Engineers account for these changes when evaluating how a vessel, underwater vehicle, or offshore structure responds under different loading or environmental conditions.
Engineers measure or predict the underwater volume occupied by a vessel, structure, or submerged object, then use that value to evaluate the weight of displaced seawater and the associated buoyant force. The results support calculations of draft, floating capacity, and hydrostatic performance, allowing designs to be assessed before or during operation.
For ships, displacement provides a basis for relating the immersed hull volume to buoyant support and vessel weight. Engineers use this relationship in load calculations and stability assessments, particularly when cargo or other loads change. The resulting analysis helps determine how immersion and draft respond while evaluating whether the ship retains suitable floating performance.
In underwater vehicle design, displacement helps engineers evaluate how the vehicle’s shape, density, and immersion affect buoyant behavior. For offshore structures, the same analysis supports assessment of how occupied seawater volume relates to floating capacity and hydrostatic performance. These applications extend displacement analysis beyond ships to engineered systems operating within or on the ocean.