Trimesh

Just one little point - this is not the primary reason these plants are next to the sea, it's done because the cooler the input feedwater is the higher the thermal efficiency of the plant. In practice, this means that using a single pass cooler with seawater might increase the overall efficiency by about 2% over using a cooling tower. This might not sound a lot, but going from 31% to 33% efficiency on a 1GW(e) class station gives you about 64MW of additional output power.