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Q & A: Do all the boats in the oceans affect sea level?

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Most recent answer: 02/02/2015
Q:
Hello; With all the boats,ships etc in the lakes/oceans,does the weight of these increase the water level?Thank you :-)
- James (age 51)
Kitchener Ontario,Canada
A:

Yes, but only by a few microns (millionths of a meter). is a very nice discussion of this topic. The most interesting fact I learned was this:

The oceans are currently rising at about 3.3 millimeters per year due to global warming (through both glacial melting and thermal expansion of seawater).

At that rate (normalized for seasonal variation and short-term fluctations), if you removed every ship from the ocean, the water would be back up to its original average level in 16 hours.

Rebecca H.


(published on 02/02/2015)

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