In a two-day workshop by CAMPFIRE partner Port Rostock, the partners of the CAMPFIRE projects CF09 GreenBalticCruising and CF10 Flexible Refueling System were discussing fundamental and specific aspects of a safety concept for ammonia bunkering at Port Rostock. Different ship-to-ship, shore-to-ship and truck-to-ship scenarios for a cruise ship, a Baltic Sea ferry and a cement freighter were considered. The workshop, led by DNV, was attended by Port Rostock, Carnival Maritime GmbH, YARA GmbH& Co KG, Göhler GmbH, DST, Rostocker Hafenamt, Motoren- und Energietechnik GmbH, Elaflex GmbH, Zentrum für BrennstoffzellenTechnik GmbH and INP — CAMPFIRE Open Innovation Lab. Many thanks to all partners for a fruitful workshop!