Raster Navigational Charts (RNCs) for the U.S. and Territories

<div><span style='font-family:Helvetica, sans-serif; font-size:13pt; color:black; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><p style='margin-top:0px; margin-bottom:1.5rem; color:rgb(76, 76, 76); font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'><span style='font-family:inherit;'>Due to NOAA's Farewell to Traditional Nautical Charts, the seamless RNC services have been turned off. For more information: </span><a href='https://nauticalcharts.noaa.gov/charts/farewell-to-traditional-nautical-charts.html' style='color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' target='_blank' rel='nofollow ugc noopener noreferrer'>https://nauticalcharts.noaa.gov/charts/farewell-to-traditional-nautical-charts.html</a>.</p><p style='margin-top:0px; margin-bottom:1.5rem; color:rgb(76, 76, 76); font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>For questions, please submit a ticket: <a href='https://www.nauticalcharts.noaa.gov/customer-service/assist/' style='color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' target='_blank' rel='nofollow ugc noopener noreferrer'>https://www.nauticalcharts.noaa.gov/customer-service/assist/</a></p></span></div><span style='font-family:Helvetica, sans-serif; font-size:13pt; color:black; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><div><span style='font-family:Helvetica, sans-serif; font-size:13pt; color:black; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><br /></span></div>The </span><span style='font-size:17px; font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif !important;'>NOAA Seamless RNC Image Service </span><span style='font-size:17px; font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif !important;'>displays the appropriate chart and draw order determined by the area of the chart, and charts with a smaller area have display order precedence over charts with a larger area. These charts are comprised of the over 2,100 charts and their insets of the coastal waters of the United States and Great Lakes. Source charts are updated on a weekly basis. For more information, see </span><a href='https://nauticalcharts.noaa.gov/data/gis-data-and-services.html#gis-applications-viewers' rel='nofollow ugc'>https://nauticalcharts.noaa.gov/data/gis-data-and-services.html#gis-applications-viewers</a>.

鉴于美国国家海洋和大气管理局（NOAA）正式停用传统航海图，其无缝光栅航海图（Raster Nautical Charts, RNC）服务现已关闭。如需了解更多信息，请访问：https://nauticalcharts.noaa.gov/charts/farewell-to-traditional-nautical-charts.html。
如有疑问，请提交工单咨询：https://www.nauticalcharts.noaa.gov/customer-service/assist/。
NOAA 无缝 RNC 影像服务会根据海图覆盖区域确定适配海图及绘制顺序；覆盖面积更小的海图拥有更高的显示优先级。该服务涵盖美国近岸水域与五大湖区域的2100余张海图及其附图。源海图每周更新一次。如需了解更多详情，请参阅：https://nauticalcharts.noaa.gov/data/gis-data-and-services.html#gis-applications-viewers。