The new S-1xx product specifications being developed by IHO WGs enrich the navigation related information on Electronic Chart Display and Information System (ECDIS). However, many of them do not yet have defined symbology, e.g., the S-122 Marine Protected Areas (IHO, 2019), S-126 Marine Physical Environment (under development), S-127 Marine Traffic Management (IHO, 2018), and S-131 Marine Harbour Infrastructure (under development). Therefore, as S-122 Edition 1.0.0 explains, implementers are allowed to select the technique and style of representation that they believe is most suited to their requirements, but they should plan for future versions that may contain a portrayal catalogue by making adequate preparations in the system (IHO, 2019). Identifying the need, the Center for Coastal and Ocean Mapping of the University of New Hampshire (UNH/CCOM), in collaboration with the National Technical University of Athens (NTUA), initiated a research work toward the development of new symbology for the recently developed / under development S-1xx Product Specifications. This paper presents the purpose of the research, what has been done so far, future work, and seeks feedback / guidance / collaborators.