Displacement (ship)

Displacement or displacement tonnage is the weight of water that a ship displaces when it is floating, which in turn is the weight of a ship (and its contents). It is usually applied to naval vessels rather than commercial ones, and is measured when the ship's fuel tanks are full and all stores are aboard.

Displacement should not be confused with other measurements of volume or capacity typically used for commercial vessels such as net tonnage, gross tonnage, or deadweight tonnage.

A variety of terms denoting degree of displacement as a function of load are defined below.

Calculation

The traditional method of determining a vessel's displacement uses draft marks (also known as "load lines"). A merchant vessel has three matching sets: one mark each on the port and starboard sides forward, midships, and astern. These marks allow a ship's displacement to be determined to an accuracy of 0.5%.

The method is to average the individual drafts to find a mean draft. It is then entered into the ship's hydrostatic tables, giving a displacement.

Ship (disambiguation)

A ship is a large vessel that floats on water, specifically the ocean and the sea.

Ship or ships may also refer to:

Acronyms:

In the arts:

Ship (comics)

The fictional A.I. entity originally known as Ship has appeared in several incarnations in the Marvel Universe. At times controlled by both the X-Men and their enemies, the sentient A.I. has at times been installed in the core of a Celestial starship, two space stations, and a techno-organic being. It is not related to Star-Lord's "Ship".

Fictional character biography

Ancient history

Ship's A.I. was created untold millennia ago by the Celestials as the operating system for a data collection device. The Celestials had genetically manipulated humanity, and they left the Ship in the area that would come to be known as Mongolia to monitor humanity's progress.

Circa 1100 A.D., a Mongolian immortal known as Garbha-Hsien (later known as Saul), discovered the Ship and lived next to it while he researched its mysteries. Saul never attempted to enter the Ship.

In time, the Egyptian immortal En Sabah Nur learned of Saul and sought him out as another immortal. In a confrontation, En Sabah Nur slew all of Saul's guards. Saul then sought to humble his fellow "forever-walker" by revealing the secret titanic vessel. Having had previous experience with futuristic technology due to his encounters with Rama-Tut, Nur attacked Saul and left the other immortal for dead and entered the Ship. He emerged later as a vastly changed being who now called himself Apocalypse.

Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase

Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase (EC 3.1.3.86, SHIP1, SHIP2, SHIP, p150Ship) is an enzyme with system name 1-phosphatidyl-1D-myo-inositol-3,4,5-trisphosphate 5-phosphohydrolase. This enzyme catalyses the following chemical reaction

This enzyme hydroylses 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) to produce PtdIns(3,4)P2.

References

External links

Displacement

Displacement may refer to:

Physical sciences

Physics

Engine displacement

Engine displacement is the volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead centre (TDC) to bottom dead centre (BDC). It is commonly specified in cubic centimetres (cc or cm³), litres (l), or (mainly in North America) cubic inches (CID). Engine displacement does not include the total volume of the combustion chamber.

Definition

Engine displacement is determined from the bore and stroke of an engine's cylinders. The bore is the diameter of the circular chambers cut into the cylinder block.

Or in decimal form:

Examples: The 427 Chevy bore is 4.312 in, and the stroke is 3.65 in, therefore the displacement for this eight-cylinder engine is:

or:

If the bore is 10 cm and the stroke is 5 cm with four cylinders, the calculation is:

Units of measure

In the United States, the cubic inch was the commonly used unit of measurement until the 1980s by the manufacturers to express the displacement of engines for cars, trucks, etc. (e.g., the "426" in 426 Hemi refers to 426 cubic inches displaced). It is still used for this purpose in the context of the classic-car hobby, auto racing, and so forth.

Displacement (orthopedic surgery)

Displacement in orthopedic surgery refers to change in alignment of the fracture fragments. In the context of joints, displacement implies that the joint surfaces are not in anatomical alignment.