A competitive analysis study is a usability engineering method administered to critically analyze and compare a set of similar applications
according to their relative merits. This paper presents a competitive analysis study of current ocean web-mapping applications that deliver ocean related data to the
scientific community. The analysis is part of a User-Centered Design (UCD) approach that was applied to develop the Ocean Web-Mapping Application of the Ocean Mapping
Group (OMG) at the University of New Brunswick (UNB), a web mapping application to deliver ocean mapping data to ocean modellers. A total of twenty-four existing
applications were critically analyzed and compared across two broad themes in cartography: (1) representation and (2) interaction; adding topics to consider the potential
needs of ocean modellers. The results helped to establish trends and gaps and to discover new opportunities for ocean web-mapping development. Using the conclusions drawn
from this study, an online survey was prepared to be conducted by ocean modellers and continue the UCD methodology of the Ocean Web-Mapping Application.