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It is dangerous for a ship to be too lightly loaded because then it floats with less volume inside water. As a result,its centre of gravity is higher and it may get blown over on its side by strong winds.Therefore, an unloaded ship is filled with sand or stones,called ballast,at its bottom.This lowers its centre of gravity so that the equilibrium of ship becomes more stable.
the ship floats because its weight per volume (density) is less than water. When unloaded its weight is less and Archimedes principle says a body is equal in weight to the weight of the water it displaces; less weight displaces less water so ship rises
A container ship carries packet containers that can be loaded or unloaded directly for rail , road or air transport.Tankers carry liquid products such as oil, crude petroleum etc.
A loaded ship is going to sink into the water more,causing water to displace..
Big ships have ballast tanks to do two things: allow an unloaded or lightly loaded ship to ride lower in the water, and to change the way the ship rides in the water. The center tank is there to adjust ride height.
a port is the place where a ship unloads and loads goods.
A ship can be 'on' a berth, which means is is moored (tied up) alongside a specific place called a berth in the dock. Or a berth is also used to describe a place for a crew member on board ship.
there is a line on the side of the ship, as the cargo is loaded the ship sinks deeper into the water, when the the reaches the water, they must stop loading. That is the low tech method, nowadays with computers, shipping companies know down to the pound what has been loaded onto the ship. The computers are even smart enough to load containers that will be need first onto the top so they can be unloaded easier.
The block of Styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is greatest on the lead. Compared to an empty ship, the same ship loaded with Styrofoam will float lower in the water.
Contact the US Coast Guard - find their details on http://www.uscg.mil/The red flag is flown whenever explosives or fuel are being loaded, unloaded or moved aboard a ship.
1. The hull of the ship is filled with air, not water. 2. The ship is heavy so is partially submerged.