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.
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.
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.
Since we’re being extra pedantic, what I said was:
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.
So we have rising sea levels because there’s so many big ships in the ocean, got it.
Xkcd did this one.
https://what-if.xkcd.com/33/
And fish poops