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Usually ships in 2-3 business days.
Scale: 1:20,000 (1 inch=0.32 miles)
Map Size: 28.49 x 34.19 inches
GeoMart is a authorized agent of NOAA and NGA print on demand nautical charts. Our charts are updated and printed after you place your order. This provides you with the most up to date NOAA approved nautical chart available. The NOAA Nautical Chart 18539: Columbia River Blalock Islands to McNary Dam is printed on heavy weight acid free paper with the latest Notice to Mariners applied, and meets United States Coast Guard and international carriage requirements for commercial and recreational vessels.
Waterproof and Tyvek paper options available.