Cabin
Because the weight of ship balances the upthrust force , We know that weight always act downward and upthrust force always act upward so we can say that it comes in equillibrium condition . that's why it keeps floating on water..........
Everyone on board must turn their clocks and calendars back 24 hours/one day. They get to live the most recent day all over again, so sometimes we say that they have "gained a day".
A ship floats on water when the weight of the water it displaces is equal to the weight of the ship. This is known as Archimedes' principle. The buoyant force exerted by the water helps to keep the ship afloat.
There are many different people who work on a ship. On a cruise line there are sailors, hospitality personnel, and retail personnel. Military ships will have a different type of crew, as will a merchant ship.
Depends on the ship, and on the purpose. For commercial ships, there used to be a "sailing master" who was in charge of how the ship was operated, but not where you were going. The First Officer or First Mate may be the safest answer for that. The Navigator was in charge of the navigation, and for commercial passenger vessels, the Purser was directly responsible to the Captain for the welfare of the passengers and cargo. For modern military vessels, the Executive Officer is the #2 guy in just about everything. When entering or leaving port, the Captain typically yields control to the Harbor Pilot.
equiring ships owners to putload lines on ships and to usethem. Plimsoll's idea, knownas the Plimsoll Mark, is stillused all over the world.Have you ever tried fl oating in the ocean?In your bathtub? Which was easier? Youmight have noticed it is easier to fl oat insaltwater than freshwater.It is easier for ships to fl oat in saltwater,too. Two properties of water -- temperatureand salinity (saltiness) -- aff ect how deep aship's hull will fl oat below the water's surface.Warm, salty water is easiest to fl oat in,but not all ships stay in warm, salty wateras they move cargo around the world. Howdo captains know their ships will stay afl oatfrom one port to the next?Imagine you are the captain of a giganticcargo ship. You loaded your ship in asaltwater port in Japan, traveled across theentire Pacifi c Ocean, and are heading to afreshwater port in the San Francisco Bay tounload.As you travel from saltwater to freshwater,your ship's hull will sink deeper into thewater. Your ship could be in danger if theload is too heavy. It could run aground,break a hole in the hull and, and, worstof all, leak fuel and oil into the water. Inthe 1860s, overloading was a big problem.Some ship owners fi lled their ships withmore cargo than they could safely carry.Over and over again these "coffi n ships"sank. Many sailors died and the cargo sankto the bottom of the sea. Some ship ownersdid not care if they lost a ship or two.Samuel Plimsoll (1824-1898) did care, andwas troubled by this thoughtless disrespectfor sailors' lives. He devised a simple line tomark on the side of a ship to show the lowestlevel it should sit in the water. Ownerscould safely load a ship until it reached thisline, but no further.The idea of load lines dates back to ancientGreece and Rome, but there were no lawsin Plimsoll's time requiring them to be onships. Plimsoll fought for years to pass alaw, the Merchant Shipping Act of 1876,Floator Sink?How do captains know howto safely load their ships?Photo: This is the PlimsollMark on the port (left) sideofBalclutha. The horizontallines show how deep a shipcan be loaded with cargo indifferent waters. If the shipwas in fresh water (FW), shecould be loaded (sinkingdown lower) until the waterwas even with the line belowFW. If she was in salt water,then she could be loaded tothe line below WNA (WinterNorth Atlantic).
According to the theory of relativity, objects with mass cannot reach or exceed the speed of light in a vacuum. As an object with mass approaches the speed of light, its energy requirements for acceleration increase towards infinity. This would require an infinite amount of energy, making it impossible to achieve the speed of light.