US Great Lakes charts — built for how you actually cruise
The five Great Lakes and the St. Lawrence approaches.
Popular sailing destinations
Where this region's sailors actually drop anchor.
The North Channel & Georgian Bay
Pink granite, pine, and the finest gunkholing in fresh water — the cruiser's favourite.
Lake Michigan — Door County
Bluff-lined harbours and the Midwest's sailing heartland.
Apostle Islands, Lake Superior
Sea caves and wild shorelines on the coldest, clearest lake.
The Thousand Islands
Where Lake Ontario pours into the St. Lawrence — islands by the thousand.
Mackinac Island
The car-free island at the hinge of Lakes Huron and Michigan.
Popular harbours & anchorages
A few of the spots Great Lakes sailors cruise — all charted in the pack.
- The North Channel
- Georgian Bay
- Little Current
- Mackinac Island
- Door County
- Chicago
- The Apostle Islands
- Bayfield
- The Thousand Islands
- Kingston
- Put-in-Bay
Cruising Great Lakes
The Great Lakes are freshwater cruising on an inland-sea scale: the granite gunkholes of the North Channel and Georgian Bay, the Apostle Islands' sea caves on Superior, and the Thousand Islands where Lake Ontario funnels into the St. Lawrence. The lakes make their own weather — squalls build fast over big open water — and the season is short and sweet. This region covers all five Great Lakes and the St. Lawrence approaches, on survey-grade ENC.
What’s inside the Great Lakes pack
Every layer our chart pipeline bakes for this region — yours for $14.99/year.
Nautica Day & Night charts
S-52 vector cartography styled for daylight and night watches.
Depth-aware routing
Route planning that respects your draft and the charted depths.
Soundings & depth contours
Spot depths and contours across the whole region.
Lights, buoys & beacons
Charted navaids with their light characteristics.
Harbours & anchorages
Marinas, harbours and anchorages along the coast.
Rocks, wrecks & hazards
Charted obstructions so you can plan a clean approach.
Tides & currents
Tidal heights and streams, bundled in.
Fully offline
Download once over wifi; navigate with no signal.
Auto-renewing, billed securely through your App Store account — no card forms, no separate logins. Cancel anytime.
Cruising the whole app? Pro includes one region; Max includes three.
Questions
Is this the northern leg of the Great Loop?
Yes — the Great Lakes and the St. Lawrence approaches. Pair it with the US Inland Rivers and US East regions for the full Loop.
Do the lakes really need marine charts?
Absolutely — big-lake weather, shoals and rocky shorelines make accurate ENC charts and depth-aware routing as important as on salt water.
Does it work offline?
Yes — download once and navigate the lakes with no signal.