This summer I've regained an interest in teaching kayaking and more formally practicing/refreshing my paddling skills (i.e. not just joining trips, but really focusing on improving my technique). Teaching the recent introductory class helped with this, as it reminded me that I enjoy practicing technique (with a fun group of friends) almost as much as going on trips.
This led me to wonder what types of paddling certifications are relevant in the Netherlands. Paddling skill and instructor certifications in the US and UK are managed by the American Canoe Association (ACA) and the British Canoe Union (BCU) - now known as British Canoeing, respectively. These pages provide descriptions of what is required for each level of sea kayaking (instructor) certifications: