offer a unique view of our oceans, seas and coasts. Satellites, and their on-board sensors, on the one hand provide a routine, cost-effective, wide area surveillance covering all maritime zones. On the other hand they can hone in on precisely-targeted locations for monitoring specific operations to gather information, e.g. in response to emergencies. In the ports world, satellites can be used to gather in-detail geographic and bathymetric information during the in-planning phase of offshore construction. They might also be used by the port at regular intervals, for example, for monitoring port operation or in order to optimize ship navigation. Potentially, they can obtain a detailed and timely view of an area in order to identify hazards to marine traffic, like floating containers. Satellite-based services also have great potential to support the maritime and marine communities beyond ports.