The key message of this report on the scenarios for policy makers is that the transition to climate‑neutral inland waterway transport (IWT) and coastal shipping is technically close to maturity but not yet economically or systemically viable under current regulatory and market conditions. The central finding of this report is that policy is the decisive bottleneck for large‑scale deployment of zero‑ and low‑emission solutions. Without binding policy interventions, the market conditions will not change. Setting mandatory targets, introducing carbon pricing and earmarking the revenues are key instruments and recommendations from this report to create a economically feasible transition.