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What is ship inspection?

Ships carrying HNS are regularly inspected to ensure that they comply with international maritime safety and environmental protection regulations. This control may be conducted by the Flag State, i.e. the country in which the ship is registered, or by the Port State when the ship is in an foreign port.

What is the purpose of the periodical inspection in connection with the Loadline certificate?

A periodical inspection within three (3) months before and after the annual anniversary date of the Load Line Certificate to verify marking and ensure that alterations have not been made to the hull or superstructure of the ship which would effect the calculations determining the position of the Load Line marking.

What vessels require a load line certificate?

Every domestic commercial vessel of 24 metre length and over is required to have a load line certificate unless it is:

  • a fishing vessel.
  • a vessel used only to carry passengers in smooth and partially smooth waters (operational areas D and E).

What regulation determines Loadline for construction of a ship?

In the 1966 Load Lines convention, adopted by IMO, provisions are made for determining the freeboard of ships by subdivision and damage stability calculations. The regulations take into account the potential hazards present in different zones and different seasons.

What are the 2 different types of load lines?

There are two types of Load line markings:-

  • Standard Load Line marking – This is applicable to all types of vessels.
  • Timber Load Line Markings – This is applicable to vessels carrying timber cargo.

What gives a ship stability?

The ship is stable because as it begins to heel, one side of the hull begins to rise from the water and the other side begins to submerge. This causes the center of buoyancy to shift toward the side that is lower in the water.

How does Bilging affects the stability of the ship?

Before bilging, the reserve buoyancy was the entire enclosed volume above the original waterline. After bilging it is the enclosed volume above the new intact water plane area. In any case, draught will increase, freeboard and therefore reserve buoyancy will decrease and the effect is always to reduce stability.

What are the factors influence the dynamical stability of the ship?

Extreme weather conditions are the dominant environmental factors that can affect the intact stability of a ship. Some effects of such weather conditions are the rolling angle, water on deck and shifting of cargo which are actually effects of both wind and waves.

What is GZ in stability?

GZ is known as the righting arm. The plot of the righting arm GZ calculated as the function of the heel angle, at constant displacement and vertical centre of gravity KG values, is used to measure the ship stability at large angles of heels. It is called the curve of statical stability.

What is the effect of the stability if the GM is large?

METACENTRIC HEIGHT AND STABILITY These basic rules apply: If GM is large, the ship has large righting arms and will have stiff, fast rolls. If GM is small, the ship has small righting arms and will have tender, slow rolls. If GM is very small, the ship is apt to hang at the end of each roll before starting upright.

What is the biggest danger to life when your vessel has collided with another ship?

Unfortunately the possibilities of loss of life in such cases are very high. Secondly, the environmental impact is very negative especially if any one of the vessels in the collision happens to carry any chemicals or any other harmful material that could be dangerous for marine life.

What is the most famous marine tragedy of all time?

the Titanic