Some people believe that gravity doesn't exist

[notimportant1234]

To explain in to you . Displacement is because of the mass , but the volume displaced depends on the volum of the object ,1 cubic meter of water is displaced for 1 cubic meter of iron but the mass of the water displaced isn't equal with the mass of iron so the object doesn't float . This is why the shape of the ship is important

[Anomalocaris]

That is the trick with Arhimedes Force = (-1) x amount of water dislocated × gravitational acceleration.
If gravity doesn't exist ships would never float . The shape of a ship is made the way it is with the purpouse of dislocating more water.

A ship whose average density is less than that of water (ie it is bouyant, or flotable as you put it) will displace an amount of water equal in weight to the ship itself regardless of what shape the ship is.

You might say the ship is designed so it’s average density, including the air in its hull, would be less than that of water. You might say the hull’s dimension and shape must implicitly meet the criteria, else the ship will go straight to the bottom.

[Cyberman]

I'm seeing a lot of density in this thread.

[Anomalocaris]

That is the trick with Arhimedes Force = (-1) x amount of water dislocated × gravitational acceleration.
If gravity doesn't exist ships would never float . The shape of a ship is made the way it is with the purpouse of dislocating more water.

Not true. Even inside an accelerating rocket far from any significant source of gravity, buoyancy will operate just the same as if there is a normal gravitational field there.

Relativity says an observer inside an accelerated frame of reference would be unable to tell whether he is accelerating or just in a gravity field.

[notimportant1234]

Yes , I might have not been clear enough , when I reffered to shape , I was thinking that it will need to have a certain size.

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But you can't say that we remain on Earth because of density difference only .

[ignoramus]

the effect of gravity via mass

[notimportant1234]

That is the trick with Arhimedes Force = (-1) x amount of water dislocated × gravitational acceleration.
If gravity doesn't exist ships would never float . The shape of a ship is made the way it is with the purpouse of dislocating more water.

Not true.   Even inside an accelerating rocket far from any significant source of gravity, buoyancy will operate just the same as if there is a normal gravitational field there.

Relativity says an observer inside an accelerated frame of reference would be unable to tell whether he is accelerating or just in a gravity field.

I see , because of the movement of the rocket the force that oposes it's movement becomes gravity.
That states that I can't really tell that I'm moving or being atracted ?

[Gawdzilla Sama]

You landlubbers are looking for a word, "displacement".

[Succubus]

You landlubbers are looking for a word, "displacement".

Correct. A ship will displace a mass of water equal to its weight and has fuck all#2 to do with its shape.

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To explain in to you . Displacement is because of the mass , but the volume displaced depends on the volum of the object ,1  cubic meter of water is displaced for 1 cubic meter of iron but the mass of the water displaced isn't equal with the mass of iron so the object doesn't float . This is why the shape of the ship is important

Try this. You are in a boat in lake and in that boat you have a large cannon ball.
Now throw the cannon ball over the side, does the water level in the lake go up or down?

[notimportant1234]

It goes up , by very little but it goes up. But the canonbal doesn't float. The ideea of a ship is to displace enought water before it sinks. That is why the shape matters . Seriously, i gave you a wikipedia link, Anomalocaris explained it to you.