Floating of Metal Structures
To construct a ship that floats when immersed water, marine engineers and naval architects rely on the Archimedes principle. This principle describes an upward buoyant force that is exerted on…
Materials Used on Different Parts of a Ship
The Shell Plating: This forms the watertight skin of the ship contributes to the longitudinal strength of the structure and resists vertical shear forces. The bottom and side shell plating…
Most commonly used materials for shipbuilding
Steel: This is a highly versatile ship construction material and is used extensively on ships for the making of its integral structure and parts. Steel has been in use for…
What Materials Are Used For Building Ships?
The economic aspect of running a merchant vessel is of prime importance as a shipowner requires a build which maximises the returns for his initial investment and covers his running…
Static stresses and constraints
These stresses are measured when the ship is not under way. They are often caused by a poor longitudinal distribution of mass. Even if the ship's total weight is balanced…
What is hogging stress
Hogging stress The length of the vessel may be considered to act like a long girder pivoted on a wave about its centre. In this position the fore and after…
What is sagging stress
sagging stress ‘Sagging’ is the direct opposite of hogging. When a vessel is supported at bow and stern by wave crests, she will tend to sag in the middle. High buoyancy…
Stresses in ship structures
Countermeasures against various stresses : It is the shipowner’s responsibility to ensure that his vessel is built to a standard high enough to withstand all the stresses she may be expected…
Types of Ships
Cargo ships are classified into various types on the basis of purpose, size, type of cargo etc. The economic factor is of prime importance in designing a merchant ship. Every…
