Harbor.Runway line

The National Oceanic and Atmospheric Administration (NOAA) <a href='https://www.nauticalcharts.noaa.gov/mcd/enc/' target='_blank'>Electronic Navigational Charts</a> (ENC), found in the A-16 <a href='https://www.fgdc.gov/initiatives/ngda-management-plan' target='_blank'>National Geospatial Data Asset</a> Portfolio, support real-time navigation as well as collision and grounding avoidance needs of the mariner, and accommodate a real-time tide and current display capability that is essential for large vessel navigation. The NOAA ENC will support all types of marine navigation by providing the official database for electronic charting systems, including the Electronic Chart Display and Information System. NOAA ENCs will also provide fully integrated vector base maps for use in geographic information systems that are used for coastal management or other purposes. The NOAA ENCs are in the International Hydrographic Office S-57 international exchange format and comply with the ENC product specification. The ENC Harbor map service displays data compiled for ENC products with a scale range from street level (1:5,000) to town level (1:50,000).<div><br /></div><div>The ENC data used within this application will be updated weekly. This map layer is not intended for navigation purpose.<div><div><br /></div><div><i>Thumbnail image courtesy of: </i><a href='https://creativecommons.org/licenses/by/2.0/' target='_blank'><i>Kartverket</i></a><br /></div></div></div>

美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）收录于A-16国家地理空间数据资产（National Geospatial Data Asset，NGDA）项目库中的电子导航海图（Electronic Navigational Charts，ENC），可满足航海人员的实时导航、碰撞与搁浅规避需求，并支持对大型船舶航行至关重要的实时潮汐与海流显示功能。NOAA电子导航海图将为包括电子海图显示与信息系统在内的各类电子海图系统提供官方数据库，以此支撑全类型海上航行。此外，NOAA电子导航海图还可提供高度集成的矢量基础地图，用于海岸带管理或其他场景下的地理信息系统。该系列海图采用国际海道测量组织（International Hydrographic Office）S-57国际交换格式，并符合ENC产品规范。ENC港区地图服务所展示的数据，是针对比例尺覆盖街道级（1:5000）至城镇级（1:50000）的ENC产品编制而成。

本应用中使用的ENC数据将每周更新。此地图图层不得用于导航目的。

缩略图图片致谢：Kartverket，采用知识共享署名2.0许可协议。