Today we use the notion of displacement:
1 m3 of fresh water weights 1,000 Kgf. = 1
tf.
1 m3 of salt water weights 1,024 Kgf. =
1.024 tf.
1 cu.ft.
of fresh water weights or 62 pounds.
1 cu.ft.
of fresh water weights or 64 pounds.
1 cubic
meter (m3) contains 10.764 cubic
feet (cu.ft.).
The same ship displaces more water in a fresh
lake than in the sea.