NOAA's Office of Coast Survey, the nation's nautical chartmaker, provides a suite of products to help make maritime transportation safe for all users.

Learn about the science that is keeping our marine transportation system function in a way that is safe, efficient, and environmentally sound.

The National Ocean Service provides wide-ranging support that strengthens the resilience of our coastal economy today — and into the future.

Explore, discover, and appreciate our country's maritime cultural heritage.

How NOAA tools play a key role in ensuring that ships move swiftly and safely along our marine highways.

We need accurate tide and current data to aid in navigation, but these measurements also play an important role in keeping people and the environment safe.

Many nautical terms derive from the Age of Sail—the period of time between the 16th and 19th centuries when masted ships ruled the seas.

PORTS marks 30 years of providing commercial vessel operators with accurate and reliable real-time environmental conditions.

Meet the next generation of integrated marine navigation services, tailored for our nation's busiest waterways.