Re:how is using sea water for cooling cool??? (Score 1)

Since servers convert all energy to heat, there will neither be a net heat loss nor a net heat increase. So the ship will be neutral to the ocean with respect to heat.

This assumes that no heat is released to the athmosphere which is not 100% the case. So in total we can expect a very small cooling effect on the ocean and a very small heating effect of the athmosphere. I think that even that small effect can be mitigated or compensated by proper technology. ( but it won't probably be worth the effort )

Also, when we talk about heat, the effect of sunlight on the ship has to be taken into account. But I guess that by choosing a suitable color for the ship, the effect of the sunlight on the total heat budget can be geared towards neutral, i.e. to have the same effect on the ocean as if the ship were not there.

So, actually, such a ship can be very environmently friendly if properly designed.