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Purpose of ship design

Ship performance

The performance characteristics serve as the most important indicators of civil vessels, determining their purpose, about which you can learn more at

A ship's tonnage, measured by the weight of transported cargoes, determines the ship's transport capabilities. The leading difference is between total (gross) deadweight tonnage (called deadweight) which includes the weight of cargo, passengers with their luggage, water, provisions, fuel, boiler water, lubricants, ship personnel with luggage and consumables, and net tonnage which includes only weight of cargo and passengers with luggage, water and provisions.

Cargo tonnage of a ship (registered tonnage) is measured by the volume or cubic capacity of ship rooms intended for accommodation of transported cargoes in them.

A distinction is made between gross tonnage (gross tonnage), which includes the volume of all spaces under decks and superstructures, and net tonnage (net registered tonnage) resulting from deduction of the volume of spaces not intended for accommodation of cargoes and passengers (crew premise, service and household premises, engine and boiler rooms, etc.) from gross tonnage.

The range of a vessel is measured by the distance it can travel at a given speed without refuelling. Modern vessels powered by nuclear fission energy have an unlimited range.

Ship's autonomy is measured by the duration of a ship's stay at sea (in days) without replenishment of fuel as well as other consumables necessary for normal life of the people on board.

Maneuverability of a vessel is its ability to change direction and speed while sailing.

Vessel habitability is characterized by the convenience of accommodation of the crew and passengers on board as well as the composition and equipment of the amenities.

Vessel operation and control automation is a combination of program operation machines, computing and decoding apparatus, navigational and other devices and automatic control which ensures possibility as well as reliability of using modern efficient high-powered installations and mechanisms on board with reduced crew onboard.

Vessel equipment is characterized by quantity and quality of special equipment ensuring effective use of a vessel in accordance with its assignment.

Strength of ship structures - ability of structural members under minimum weight to withstand external loads acting on the vessel, stability of ship structures - constructions form stability under the action of external forces.

The ability of vessel structural components to resist destructive action of various physical and chemical factors (heat resistance, impact resistance, corrosion resistance, wear resistance, etc.) is called the resistance of vessel structural materials.

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