[kevviiinn]

That article doesn't seem to mention any reasons not to launch at sea and goes on to state:

>The concept of sea launch has been used successfully before, and it makes commercial sense for some applications. Orbital launch trajectories are affected by location, and a sea-based launch allows the operator to pick the site to maximize efficiency and payload. The space company Sea Launch used a secondhand MODU to launch Ukrainian-built Zenit rockets for 15 years.

[prepend]

So what else did you find? What do you think are the reasons that SpaceX and other launch centers (NASA, roscosmos, cnsa) use ground based launches instead of offshore?