HIFLD OPEN Pylon Areas (USACE IENC)

The USACE IENCs coverage area consists of 7,260 miles across 21 rivers primarily located in the Central United States. IENCs apply to inland waterways that are maintained for navigation by USACE for shallow-draft vessels (e.g., maintained at a depth of 9-14 feet, dependent upon the waterway project authorization). Generally, IENCs are produced for those commercially navigable waterways which the National Oceanic and Atmospheric Administration (NOAA) does not produce Electronic Navigational Charts (ENCs). However, Special Purpose IENCs may be produced in agreement with NOAA. IENC POC: [e-mail]

美国陆军工程兵团（USACE）的内陆电子航海图（IENCs）覆盖范围涵盖美国中部地区21条河流的7260英里航道。IENCs适用于由USACE维护、供浅吃水船舶通航的内陆航道（例如，航道维护水深为9至14英尺，具体依航道工程授权文件而定）。通常情况下，IENCs会为国家海洋和大气管理局（NOAA）未编制电子航海图（ENCs）的商业通航航道编制。不过，可与NOAA协商制作专用型IENCs。IENCs联络方式：[e-mail]