A compilation of nautical chart symbols used on electronic navigational charts (ENC), edited to meet international standards and annotated to clarify nuances in the symbol usage as needed. An appendix includes a complete list of all ENC chart objects and attributes.

At the end of 2024, all traditional NOAA paper charts will have been permanently discontinued and the ENC that replaces them will be the only official nautical charts of US waters. These chart symbols will become increasing more important as mariners transition to the use of ENC.