Does nuking ocean bases cause pollution?

Contrary to SMAC's historical counterpart (Civilization III), nuking an ocean city does not cause pollution in the form of nuclear fallout (pollution is only referenced once in the manual [pg. 139], more as a descriptor than a mechanism). However, nuking an ocean city can cause eco-damage, which is effectively pollution for this use-case.

Determining whether eco-damage is caused by a nuke depends on the type of missile payload (conventional, fungal, tectonic, or planet buster). From what I've found, it appears that conventional and fungal missiles do not cause eco-damage, but tectonic missiles and planet busters do cause eco-damage, as they are considered atrocities in the game's mechanics equations. A forum discussion on Planet's views on atrocities and their influence on eco-damage can be found in this thread.

In terms of how tectonic missiles and planet busters (atrocities) relate to eco-damage, I pulled the following from this forum post (emphasis added):

Eco-Damage = (DamageFactor * Perihelion * Techs * Life * Difficulty * Planet) / 300

DamageFactor = Int{ [Terraforming - Cleanmins1] + [(Minerals - Cleanmins2 + 5 * Atrocities) / (1+Goodfacs)] }

Atrocities = Number of Major Atrocities committed by your faction. These include the use of planetbusters or techtonic missiles, but do not include the use of fungal missiles.

Note: It's been years since I've played SMAC/SMAX, so I double checked here and here to see if I remembered correctly all of the payload options and make sure I didn't overlook anything that would constitute a "nuke".

tl;dr

Nuking ocean cities does cause pollution (eco-damage).