BASEMAPS is a map service to access Baltic Sea maritime spatial planning (MSP) data from the original source where it is stored.
It contains links to OGC standard
services from national Maritime Spatial Data Infrastructure (MSDI).
The difference between HELCOM Map and Data Service (MADS) and
BASEMAPS is that MADS data is stored in a central database whereas BASEMAPS access data from the original source.
The BASEMAPS guide contains detailed instructions to use the tool.
The story of BASEMAPS (BAltic SEa MAP Service) dates back to 2012 when a project called BaltSeaPlan recommended building a tool to access Baltic Sea decentralized MSP data based on Marine Spatial Data Infrastructure (MSDI). Planners realized there was a need to work with transboundary and up-to-date data that was reliable to make their own national MSP plans.
Working with centralized database solutions was (and still probably is) the best option to get a large amount of harmonized data from data providers. However, these centralized databases do not guarantee that the data is up to date. Planners needed a solution to get data published and maintained by the original official source.
That solution is called BASEMAPS.
BASEMAPS allows users to view and download data/metadata published by national data providers through OGC open geospatial standards—WMS and WFS. It is also possible to access downloadable services and ArcGIS REST Map layers. It is aimed for planners, data providers and authorities dealing with maritime spatial planning in the Baltic Sea.