WHALEBACK SHOAL @ SUMMERLAND GROUP MAP

Navigate the intricate waters of the central **Thousand Islands** in the **St. Lawrence River** with **CHS Nautical Chart 1436: Whaleback Shoal to Summerland Group** (CM1436), published by **Fisheries and Oceans Canada**. This detailed **marine chart** at approximately 1:25,000 scale provides essential hydrographic data including depths, sea bottom characteristics, **Whaleback Shoal** hazards, **Raft Narrows**, and channels around **Rockport**, **Ivy Lea**, **Gananoque**, and **Brockville**. Critical details cover **Thousand Islands Bridge** clearances, **Summerland Group** islands, and visual landmarks like **Boldt Castle**, ensuring safe **marine navigation** for cruising, sailing, fishing, and commercial vessels on this segment of America's Great Loop. Ideal for pilots seeking precise routes through granite shoals and scenic anchorages.