this post was submitted on 23 May 2025
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[–] Archangel1313@lemm.ee 103 points 2 months ago (4 children)

Also weird how giant steel tankers float on the ocean. Especially when they're weighed down by all that cargo. It's practically unbelievable. I throw a tiny rock in the ocean, and it sinks...but not those giant steel boats? /s

[–] tja@sh.itjust.works 57 points 2 months ago (2 children)

No, ocean water can't sink steel boats

[–] lostme@lemmy.world 10 points 2 months ago (1 children)

It's a well known fact that steel weighs the same as feathers

[–] Salamand@lemmy.today 4 points 2 months ago

A common misunderstanding. Boats (made of rock) float due to gravity pushing the water up (as it bounces off the earth). Boats made of feathers (ducks) harness the same principle, as they are also filled with water.

[–] atro_city@fedia.io 9 points 2 months ago (1 children)
[–] UltraGiGaGigantic@lemmy.ml 2 points 1 month ago

Regardless of how it happened, (the plane hijackings Orchestrated by "ex" CIA operative Osama Bin Laden duh) 9-11 was used as an excuse to dissolve civil liberties at home and wage war abroad.

Patriot Act

[–] ByteJunk@lemmy.world 19 points 2 months ago (5 children)

Well... When you put one of those huge tankers in the water, it will move a LOT of water out of the way.

As long as the tanker weights less than the weight of all that water it displaced, it will float.

As you keep loading up the tanker with more cargo, it will go deeper into the water right? But this means that it is pushing more water out of the way (the water that used to be where the boat now is), which balances out the weight because that creates more buoyancy.

A rock, on the other hand, is heavier than the water that it displaces, so it sinks like a tanker whose front fell off.

[–] starman2112@sh.itjust.works 15 points 2 months ago (3 children)

As long as the tanker weights less than the weight of all that water it displaced, it will float.

But steel is heavier than water

[–] goodeye8@fedia.io 30 points 2 months ago (3 children)

If you take 1kg of steel and 1kg of water, which is heavier? That's right, steel is heavier.

[–] jaybone@lemmy.zip 9 points 2 months ago (2 children)

If she weighs more than a duck, then she’s made of wood.

[–] DeltaWingDragon@sh.itjust.works 3 points 2 months ago

And therefore?

... A WITCH!

[–] AnUnusualRelic@lemmy.world 3 points 2 months ago

We shall use the larger scales!

[–] univers3man@lemmy.world 3 points 2 months ago (1 children)
[–] starman2112@sh.itjust.works 3 points 2 months ago

Now this guy knows what he's talking about

[–] DeltaWingDragon@sh.itjust.works 3 points 2 months ago

A steelogram of kilo is feather than heaviers

[–] pixeltree@lemmy.blahaj.zone 3 points 2 months ago

Ah, but boats aren't solid steel! It has lots of hollow spaces inside, making the volume up displaced water bigger, without increasing the weight!

[–] lka1988@sh.itjust.works 3 points 2 months ago

And water is surprisingly heavy itself.

[–] Saleh@feddit.org 12 points 2 months ago* (last edited 2 months ago) (2 children)

Since we are pedantic, what you say isn't true.

The tanker weights exactly as much as the weight of the water that it displaces. They are in balance. You describe it yourself. The tanker sinks deeper if it becomes heavier and swims more up as it becomes lighter.

The measure of "boat swims" is not the weight of the displaced water. It is wether there is some boat wall left sticking out of the water to keep more water from entering and displacing the air that keeps the submerged volume in weight balance with the water.

[–] ByteJunk@lemmy.world 4 points 2 months ago

Since we're being extra pedantic, what I said was:

As long as the tanker weights less than the weight of all that water it displaced, it will float.

This is factually true, and you didn't disprove it.

As for "boat wall sticking out of the water", that's just grasping at straws man. If that boat is fully waterproof, like a submarine, the definition holds up. Or if you consider that water entering the boat adds to the boat weight, then again it will hold true as it will weigh more than the water it displaces.

[–] Jumi@lemmy.world 4 points 2 months ago (2 children)

So we have rising sea levels because there's so many big ships in the ocean, got it.

[–] dwindling7373@feddit.it 10 points 2 months ago (1 children)

Metal is heavier than water. Virtually every containber is fille to the brim with products, now I don't know you but most everything we buy is heavier than water.

It's clear they have some kind of extra propulsion in those, most likely magnetic anti gravitation.

[–] ByteJunk@lemmy.world 6 points 2 months ago

The bane of shipping is that a lot of money goes to shipping air around :)

[–] Archangel1313@lemm.ee 5 points 2 months ago

Nah, man...it's magic! Magic is the only explanation.

[–] WoodScientist@sh.itjust.works 1 points 2 months ago

As long as the tanker weights less than the weight of all that water it displaced, it will float.

But that's only because of the spell that the ancient Wizard Archimedes cast in the elder days. Archimedes didn't discover his principle, he molded reality to follow his rule.

[–] kaeurenne@kadaikupi.space 5 points 2 months ago

Giant steel ship can transport the giant rock across the sea