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 i

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.