On Thu, 17 Feb 2005 00:13:16 -0500, rhys wrote:

On Wed, 16 Feb 2005 01:40:22 GMT, Brian Whatcott
wrote:

Warm water is less dense than cold water. Water expands more with
temperature than the metals, so a ship sits lower in hot water.
Moreover, water's rate of expansion increases as the temperature
rises. Another factor: water like oil, gets considerably less
viscous when warm, so a hull might be expected to be livelier, and
maybe the swell higher....

So the worst case scenario for a loaded ship would be a laden tanker
enduring a Red Sea or a Persian Gulf cyclone? I vaguely remember that
those areas are the hottest oceanic bodies on Earth.

By contrast, on a calm day in zero C. Antarctic water (ice-free,
however), the same laden ship would ride high(er) and dry.

Interesting!

R.

You actually contributed another gotcha: a crude oil cargo runs thin
and expands, so the CofG would go up a little higher while the
freeboard goes down, in the Gulf.

Brian Whatcott ALTUS ok