>will be any unintended consequences of extensive uptake of this technology. For example could this increase levels of O2/CO2/N2 dissolved in the worlds oceans.

>will be any unintended consequences of extensive uptake of this technology. For example could this increase levels of O2/CO2/N2 dissolved in the worlds oceans... No. There will be no measurable effect whatsoever. The waves on the ocean's surface do a fine job of aeration, and cover an area millions of times larger than the ships' surfaces.