NOAA Chart 12273: Chesapeake Bay Sandy Point to Susquehanna River Detailed coverage of Chesapeake Bay Sandy Point to Susquehanna River OceanGrafix provides mariners with the most up-to-date, NOAA-approved nautical charts ever offered Charts are printed only after an order has been received, ensuring the most up-to-date information Meets U. S. and international carriage requirements for commercial vessels, all notice to mariners corrections are applied. U. S. Coast Guard approved, Scale 1: 80,000,Size (Inches): 39.53 X 35.49