Vocabulary Control in Nautical Information Resources

Abstract Nautical charts are an essential information resource for safe navigation. However, they not only a useful navigators; According to the International Hydrological Organization (IHO), essentially fulfill two functions: 1) Maritime navigation, since most hydrographic services have obligation provide coverage of nautical their national waters, in all coastal including major ports and smaller marinas purely local interest. 2) as source information, present detailed configuration seabed. Information on shape seabed is required by diversity users addition example, engineers interested onshore construction, dredging contractors, oceanographers, defense agencies, zone managers, etc. Traditionally, there three elements that play important role retrieval: title, author, subject access point. Among latter, one can distinguish indexing natural language controlled vocabularies. The thematic points, makes it easier user search retrieve types resources satisfy needs. Traditionally processing used predominantly, motivated lack availability vocabulary specific área Spanish. objective this work aimed at establishing criteria construction Spanish field charts.