Question

A solid object with a density lower
than that of water will float.

So why should a battleship made of
aluminium not sink?

Answer 1

Answer:

That box would float if it weighed less than a box the same size filled with water; otherwise it would sink. So, in short, an aircraft carrier floats because it weighs less than the same volume of water—because its average density is less than that of the water that surrounds it.