It requires a lot of effort to reclaim land, hence the recipe for it should reflect that.

I recommend using the following mods with this:
https://mods.factorio.com/mod/ExpensiveCliffs
https://mods.factorio.com/mod/beautiful_bridge_railway

I also recommend https://mods.factorio.com/mod/cargo-ships (automated ships)

Changelog:

Version: 0.0.1 (03/25/2018)
- Initial release
Version: 0.0.3 (05/12/2020)
- Update to 0.18
- removed blue science cost cause too lazy to learn new format (actual recipe still the same)
Version: 0.0.4 (11/21/2021)
- Update to 1.1
- added thumbnail