Original SeaBlock updated to 2.0. Unofficial fork of KiwiHawk's Sea Block (MIT), fixed to run on Factorio 2.0 with current Bob's (2.1.x) and Angel's (2.0.x). Also adds a stone-based pipe recipe.
This version of the fork has bugged techs that can't be unlocked after blue science due to depending on hidden technology. I made a pull request for the fork to fix this; please include its changes in this mod portal upload, before people start downloading it and complain about the tech tree being broken. https://github.com/KompetenzAirbag/SeaBlock/pull/84