Table of Contents
- 1 Why do you think most merchant vessel have nearly rectangular cross section for the greater part of their length?
- 2 Why is the hull of a cargo ship constructed with a rectangular cross section?
- 3 What is the difference between bulk and general cargoes?
- 4 Which country is number one source of officers?
- 5 Why do boats float?
- 6 Why is grain not usually transported in container ships?
- 7 Why is it important to do a cross sectional study?
- 8 How big is a box shaped Naval Vessel?
Why do you think most merchant vessel have nearly rectangular cross section for the greater part of their length?
In order to achieve a high speed, the resistance of the hull needs to be minimized, which is obtained by a fine form hull. That is, the hull section for most part of the length of the ship is almost rectangular. This is done in order to accommodate maximum number of containers below the deck.
Why is the hull of a cargo ship constructed with a rectangular cross section?
In order to provide the maximum space to store cargo, the hull of a cargo ship is constructed with a rectangular cross section. In order to float, the steel ship must have a large volume compared to the weight. The steel plates (about 10 mm thick) will not be able to resist the buoyancy forces on their own.
What is the purpose of double bottom?
A double bottom or hull also conveniently forms a stiff and strong girder or beam structure with the two hull plating layers as upper and lower plates for a composite beam. This greatly strengthens the hull in secondary hull bending and strength, and to some degree in primary hull bending and strength.
What is bulk ship?
Bulk shipping is the transportation of goods in large quantity, usually not packed but loaded directly into a vessel. Such goods are grains, petroleum products, iron ore and more. These are unpacked goods loaded onboard a vessel.
What is the difference between bulk and general cargoes?
The two main categories are general and bulk cargo. General cargo is unitized (carried in defined load units) while bulk cargo is loose (carried in any quantity). General cargo can be sub-divided into three categories: Break Bulk.
Which country is number one source of officers?
While China is the biggest supplier of officers, followed by the Philippines, India, Indonesia and the Russian Federation.
What is girder in ship?
Girders: A girder is a longitudinal member used in the construction of the bottom of a ship. They can be solid or not and can be placed above the keel (centre girder) or spaced equal distances from it (side girders). They can be continuous or divided by floor sections (intercostal side girders).
Why are boats curved at the bottom?
Drift boats are curved so they can better handle river running. The curved shape was first added to the open water dory to create a drift boat that could ride the whitewater rapids of the McKenzie river in Oregon.
Why do boats float?
The air that is inside a ship is much less dense than water. That’s what keeps it floating! As a ship is set in water, it pushes down and displaces an amount of water equal to its weight.
Why is grain not usually transported in container ships?
Containers may be overweight or overloaded, given the dense properties of grain; capacity is restricted by mass rather than volume. Grain cargoes spilt on board ships potentially result in significant problems for the ship’s bilge system. The associated clean up can be complex and costly. Pest contamination.
Which is an example of a cross sectional area?
Cross-sectional area. The cross-sectional area is the area of a two-dimensional shape that is obtained when a three-dimensional object – such as a cylinder – is sliced perpendicular to some specified axis at a point. For example, the cross-section of a cylinder – when sliced parallel to its base – is a circle.
Why is the cross sectional area of a water pipe important?
The cross-sectional area of some shape is important in many different applications. The cross-section of a series of pipes carrying water helps to determine the speed and pressure with which the water flows through the pipe, especially if there is some change in the cross-sectional area of the pipe at some point.
Why is it important to do a cross sectional study?
Because you only collect data at a single point in time, cross-sectional studies are relatively cheap and less time-consuming than other types of research. Cross-sectional studies allow you to collect data from a large pool of subjects and compare differences between groups. Cross-sectional studies capture a specific moment in time.
Numerical 8: A box shaped vessel, 50 metres long × 10 metres wide, floats in salt water on an even keel at a draft of 4 metres. A centre line longitudinal watertight bulkhead extends from end to end and for the full depth of the vessel.