IPCC 4 estimates 93.4 percent of the heat attributable to global warming is amassing in the oceans and thermal expansion can explain ≈25% of
observed sea-level rise for 1961–2003 and 50% for 1993–2003.

The coefficient of expansion of water is less in colder deep waters
and turns negative at 3C, which is about the temperature at 1000 meters
below the ocean’s surface.

Most ocean heat is absorbed in the first few centimeters of the surface, whereas the average depth is 4000 meters. There is therefore a great capacity to dilute the surface heat causing thermal expansion and icecap melting in the deep.

Moving this heat in a heat pipe, the most effective way to do so,
allows you to produce all of the renewable energy needed by the ocean
thermal energy conversion method, which also saps hurricanes of their
power source.

Hurricanes move large quantities of heat from the tropics to the
poles where icecap melting and methane releases from the tundra present probably the greatest risk from climate change.

Sapping hurricanes of their strength by producing OTEC power would mitigate this problem as well.

Many claim OTEC has been over-hyped. It seems to me it has been sold short.