13316, Maptech NOAA Recreational Waterproof Chart-Blue Hill Bay; Blue Hill Harbor.Maptech NOAA recreation charts are ideal for use aboard recreational (non-commercial) vessels. Printed on durable waterproof plastic. Accurate and up to date— usually printed after you order is placed. Maptech NOAA charts use traditional NOAA chart colors which also makes them the perfect choice for framing and decorative purposes.