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Large Ships

A ship is commonly defined as having a bow (front) and stern (back), and is built for ocean travel for the purpose of commercial or military transport. Ocean liners, container ships, and destroyers are classified as ships.

2,212 Questions

Does the Calypso even HAVE a plimsoll line?

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Asked by Wiki User

Probably not. The purpose of a plimsoll mark is to protect insurance companies that insure merchant vessels. To get a plimsoll mark you must build the vessel to a classification societies standards and endure continual inspections. Since the Calypso started life as a warship, warships do not have to conform to the same standards as merchant vessels, they are not classified by a society and thus have no plimsoll mark.

What is the name of largest shipyard in the world?

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Asked by GouthamiSmarty

The largest shipyard in the world is the Hyundai Heavy Industries shipyard in Ulsan, South Korea. It covers over 4 million square meters and is known for building a wide range of vessels, including oil tankers, container ships, and cruise ships.

What is the lump on the bow of a ship that cuts through the water first?

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Asked by Wiki User

The lump on the bow of a ship is called a bulbous bow. It helps to reduce drag on the ship by changing the flow of water around the hull, making the ship more fuel-efficient.

What is the density of bunker fuel?

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Asked by Wiki User

The density of bunker fuel can vary depending on the type of fuel, but it is typically around 0.95 to 1.03 grams per cubic centimeter.

Why does a metal ship float but a metal needle sink?

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Asked by Wiki User

According to Archimedes principle and we can note that the amount of water displaced by a needle is lesser than the amount of water moved out by the needle (that is displacement of the needle). So the needle is no longer stay on the surface of the water and sink into the water. As it sink into the water means below the water it can not be float again because of it density (mass per volume) is heavier than the density of the water. But in the case of iron ship, if the shape of the iron is just a flat and it can be sink like a needle. But making the Iron by forming a shape causing her displacement (it displaces on the water) more than weight of water she move out (immersed in) the ship can stay on the water. Yes, as we say if the displaces by ship is equal to the water that she move out is equal then the ship is afloat (at the certain draft). For the ship which design to afloat on the water until extra particular amount of cargo is loaded on the ship (dead weight ton). She can remain afloat until that amount of weight is reached (that is displaces by ship is equal or more than the displaced water. but if she has lesser amount she subject to sink.) These are the basic and other factors to be taken into account as per their structural design by NA.

That is my idea but please overwrite mine if your answer is good enough.

Toe Wai Win (Singapore Maritime Academy) COC 1&2
Ships float because they are hollow on the inside, so the air inside keeps it floating, because air is lighter than water.

Needles sink because they aren't hollow, so there is no air inside to keep it a float.

Hope this helps :)
We actually can get a needle to float on water if we put it in the water in such a way as to allow surface tension to keep it afloat. Setting that idea aside, a piece of steel (a needle is made of steel) will sink in water because it is more densethan water. Drop a needle in water and it will sink to the bottom. But a steel ship will float on water because of the buoyancy of the water. The ship displaces the water and will stay afloat. Let's look at the situation. If you're getting into a bath tub full of water, gravity is pulling down on the water, and also on you. Gravity continues to pull down on you as you enter the water. As you are pulled down into the water by gravity, your body has to move some of the water out of the way so that it can "get into" the water. The moving of the water out of the way is called displacement. The water level rises in the tub because you displace some water getting in. The net result of this displacement is that buoyancy takes effect. You know that when you are immersed in water, you feel "lighter" in it. This is because the water is trying to push you back out, and this the source of the force of buoyancy. Just like you in the tub, when a ship is in water, it displaces a volume of water that equals it own mass. That is, when a ship is in water, it pushes a certain volume of water out of the way. This is the vessel's displacement. The mass of this volume of water that it displaces equals the mass of the ship. Once the ship displaces a mass of water equal to its own mass, it will then not sink into the water any more. Buoyancy has taken hold. The ship is made of steel, but is "hollow" inside. The extra space inside the ship gives the ship a lower average density than the density of the water itself. The "empty" spaces inside the ship are the key to its ability to float. A solid piece of metal, like the needle, will sink if just dropped into the water. Yet the steel ship will float.
This happens according to Density : Volume where the large volume off water over comes the Volume of Ship. therefore the Density of water with its Volume have greater ratio then Ship and its Volume which is why ship does not sink.

Or to put it another way, the ship is designed to be buoyant; the needle is not.

there is no need to put in other way the needle can also float if you can manage to put it on surface of water without any external down force... or say tension less

Yes, a needle can float on the surface tension of water, if you lower it in carefully enough (for example, cradled in a fork). But the question involved the reason a needle *sinks* when a ship would float. This has nothing to do with surface tension.

Let's put it this way: the needle weighs more than the water it displaces; the ship weighs less than the water it displaces. If the needle were as hollow as the ship, it would float too.
It's about density, how much something weighs by volume. Things with lower density floats in liquids with higher density.

The needle, although it's a tiny thing, is solid metal, so it's still heavier by volume when compared with water.

The ship, despite being heavier in total, is basically a shell with lots of air in it. This air make the ship as a whole have a lower density than water, so it floats.
a stone sinks in water but an iron ship floats in it.why does it happen? is it due to the different properties of iron and stone? is it due to the shape of ship or stone?

Ships are hollow. Needles are solid. The air in the ship is what's holding it up.


Nail is a solid body because it does not contain air whereas a ship is a large hollow body because it contains air. Density of nail is more than density of water. Anything whose density is more than that of water will sink into it. While the density of a ship is less than that of water. Hence a nail or pin sink but a ship floats on water.

What is a rope ladder rung on a ship called?

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Asked by Wiki User

A rope ladder rung on a ship is typically called a "stave" or a "rung." It serves as a step for climbing up or down the ladder.

On the titanic what were the funnels used for?

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Asked by Wiki User

The funnels on the Titanic were used to release exhaust gases and smoke from the ship's engines. They also served as a ventilation system to help provide fresh air to the engine rooms and boiler rooms below decks. Additionally, they were designed to give the ship its distinctive profile and enhance its aesthetic appeal.

Compared with an empty ship would a ship loaded with cargo of foam insulation sink deeper into water or rise in water?

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Asked by Wiki User

A ship loaded with cargo of foam insulation would likely float higher in the water compared to when it is empty. This is because foam insulation is less dense than water, so it would displace more water and provide more buoyancy to keep the ship afloat.

How much did the torrey canyon clean up cost?

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Asked by Wiki User

The Torrey Canyon oil spill clean-up in 1967 cost around £6 million, which is about $16 million in today's currency. The operation involved a range of methods, including oil dispersants, beach cleaning, and controlled burning.

How much oil is an oil tanker allowed too discharge into the sea on a voyage?

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Asked by Wiki User

The amount of oil an oil tanker is allowed to discharge into the sea on a voyage varies depending on international regulations and the specific capacity of the tanker. Oil tankers must comply with regulations set by the International Maritime Organization (IMO) which limit the amount of oil discharge to prevent pollution and protect the marine environment.

How many oil tankers are there?

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Asked by Wiki User

As of 2021, there are approximately 10,200 oil tankers worldwide, which range in size and capacity. These tankers are used to transport crude oil and refined petroleum products across oceans and waterways.

How do ships lessen the impact of a lightning strike?

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Asked by Wiki User

Ships are equipped with lightning protection systems that help to reduce the impact of a lightning strike. These systems typically include lightning rods, grounding systems, and shielding to direct the electrical current safely into the water. Additionally, ship structures are designed to dissipate and withstand the energy from a lightning strike to minimize damage.

What is a weather anchor?

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Asked by Wiki User

A weather anchor is a television personality who presents and explains weather forecasts to viewers. They typically appear on news programs to give updates on current weather conditions, forecasts, and any potential weather-related events.

What is navigation vessel?

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Asked by Wiki User

A navigation vessel is a ship or boat specifically equipped for the purpose of navigating and exploring waterways, oceans, or other bodies of water. These vessels typically have advanced navigational equipment and technology to ensure safe and efficient travel.

When did the Titanic disaster take place?

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Asked by Wiki User

At approximately 11:40pm April 14, 1912 the Titanic struck an iceberg. At 2:20am April 15,1912 the Titanic plunged to the bottom of the ocean.

This occurred between Iceland and New York City.

How many CUBIC meters are in a floor that is 4 inches thick 288 inches wide by 384 inches long?

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Asked by Johnny3h

To find the volume in cubic meters, first convert all measurements to meters: 4 inches = 0.1016 meters, 288 inches = 7.3152 meters, and 384 inches = 9.7536 meters. Then, multiply the three dimensions: 0.1016 meters x 7.3152 meters x 9.7536 meters = 0.7225 cubic meters. So, the floor that is 4 inches thick, 288 inches wide, and 384 inches long has a volume of 0.7225 cubic meters.

Why do some surfboards have more than 1 fin located on the underside of the board?

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Asked by Wiki User

Surfboards with multiple fins provide more stability and control over the board especially in different wave conditions. The number and placement of fins can affect the board's maneuverability and speed. Tri-fin set-ups, for example, offer a good balance between stability and maneuverability, commonly used in a variety of surfing styles.

What is the percentage of a boat sinking today?

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Asked by Wiki User

The percentage of a boat sinking today is extremely low, as modern boats are designed with safety features and undergo regular maintenance to prevent such accidents. Additionally, stringent regulations and safety protocols are in place to ensure the safety of passengers and crew while at sea.

Why is Greenland named Greenland?

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Asked by Wiki User

Greenland was named by the Norse explorer Erik the Red in order to attract settlers to the island. The name "Greenland" was chosen as a way to make the land seem more appealing and hospitable despite its icy landscape.

Will balloons raise a sunken ship?

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Asked by Wiki User

No, balloons would not be able to raise a sunken ship on their own. The process of raising a sunken ship typically involves using specialized equipment such as cranes, salvage pontoons, or airbags to lift the ship to the surface.

What is the correct punctuation for Ship Queen Mary?

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Asked by Wiki User

The correct punctuation is "Ship Queen Mary."

What is the biggest crusie ship?

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Asked by Wiki User

As of 2021, the largest cruise ship is Royal Caribbean's Symphony of the Seas. It can accommodate over 6,600 passengers and has a tonnage of around 230,000 GT.

What is the largest gun ever put on a tank?

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Asked by Wiki User

The largest gun ever put on a tank is the 152 mm gun on the Soviet ISU-152 tank destroyer. It was designed during World War II and was known for its ability to destroy heavily fortified targets and enemy tanks with its powerful gun.

What are the duties of and responsibilities of deckhand seaman?

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Asked by Wiki User

One of the duties of an ordinary seamen is to perform maintenance on the ships motors and tools. Ordinary seamen also clean the scales of the deck, paint the deck, knot ropes, and splice wire.