text: 6. The provislons of the Convention have continued to ex€rt an lrnportantinfluence on the development of national pollcy t j.th reapect to la," of Che seanatters. since the submisBion of the report of the secr etary-General to thethirty-ninth session of tbe ceneral Assembly (A/g9/647 anal Corr.l), furlherdevelopments and trends in natlonal policy regarding marine affairs are to benoted. Fron the informatlon receired or colrected by the office of the speciarRepresenlatiee of the sdcretary-General for tbe Law of che sea, it is seen that anunber of states bave adopted national leglslation dealing nith a variety of marineissues, which, in particular, relate to such matters aa the determination of thebaselines, the breadth and status of the territorlal sea, the estabrishnent ofexclusive economic zones, the definition of the conlinental Ehelf and thedeli'mitati.on of narltime boundaries between staces wlth opposite or adjacent coasts. 7. Tbe conv€ntion has set crear rimits for areas farring under nationarsovereignty and jurisdiction - a lrnit of 12 nauticar. nires for the territorialsea, 24 nautical miles for the cont.iguous zone and zo0 niles for the exclusiveecononic zone. rt nas the historic failure to estabr-ish specific rirnits to theterritorial sea nhich gave rise to uncertainty aa eo the valiatity of c!.aims toextended areas of territorial seas. The widespread agreenent to a l2_mileterritorial sea as reflected in the convention has been increasingly confirned bythe practice of a large nux0ber of States. 8. In his report (A/39/647 anal Corr.l.) the S€cr etary-cenera t had not.ed that some80 states have establiahed territoriar, seas of 12 nautical miles. since thenseveral staEes have enacted l-eglslation on the territorlal sea. Anong the lattergroup of States, flve have adopted a l2 mile terrleorial sea g/ and three haveadopted legislation setting out specific co-ordinates to establish the outer limitsof the territorial sea within the l2-nile limit. f/ The regisration of teo statesexpressly sets out tbe tegal status of the terrlt-rial sea 7/ consislent vrith theConvention of the Lac of the Sea.
analysis: The text appears to be discussing the development of national policies and laws related to marine affairs, specifically regarding the territorial sea, exclusive economic zones, and other maritime boundaries. It seems to be focused on the international framework established by the Convention on the Law of the Sea and its impact on national legislation. This suggests that the text is more concerned with the legal and regulatory aspects of marine affairs rather than economic, environmental, or social aspects.