Hole 1
Par 4 · 383 yd
Plays north-east. 6 bunkers.
Green 24 yd deep, 22 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Chatham, Massachusetts, USA
18 holes, par 70, about 6,412 yards (5,863 metres) along the hole lines. The par 3s are 4, 7, 10 and 15. The par 5s are 5 and 17. The longest hole is the 17th at 533 yd, the shortest the 15th at 145 yd. The map shows 85 bunkers. It shows no water in play.
Every hole, numbered, as the app draws it.
Each hole turned so it plays up the page, from the tee at the bottom. Every green's slopes are mapped: flip a card to see its green.
Par 4 · 383 yd
Plays north-east. 6 bunkers.
Green 24 yd deep, 22 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 346 yd
Plays east. Dogleg right. 8 bunkers.
Green 31 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 319 yd
Plays east. 14 bunkers.
Green 37 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 186 yd
Plays north-west. 5 bunkers.
Green 24 yd deep, 24 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 523 yd
Plays west. 6 bunkers.
Green 28 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 447 yd
Plays east. 5 bunkers.
Green 31 yd deep, 28 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 173 yd
Plays west. 3 bunkers.
Green 38 yd deep, 21 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 337 yd
Plays south-west. 7 bunkers.
Green 32 yd deep, 19 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 402 yd
Plays south-west. 4 bunkers.
Green 26 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 206 yd
Plays south. 3 bunkers.
Green 31 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 483 yd
Plays south-west. Dogleg left. 2 bunkers.
Green 23 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 331 yd
Plays south-west. 4 bunkers.
Green 30 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 339 yd
Plays west. 8 bunkers.
Green 28 yd deep, 19 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 378 yd
Plays north-east. 7 bunkers.
Green 31 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 145 yd
Plays north-east. 7 bunkers.
Green 31 yd deep, 23 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 413 yd
Plays south-west. 8 bunkers.
Green 26 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 533 yd
Plays north-east. 4 bunkers.
Green 28 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 467 yd
Plays north-east. 5 bunkers.
Green 31 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Lengths are measured along each hole's line on OpenStreetMap, so they can differ from the club's card. A bunker between two holes counts on both.
The app
On your iPhone and Apple Watch, Number & Line turns this map into a yardage book, with distances to the front, middle and back of each green from where you stand. You can plan each hole at home and get club advice from your own distances and the day's wind.
The app is coming soon to the App Store, and this course is already built for it.

Course map © OpenStreetMap contributors, under the Open Database Licence. See it on OpenStreetMap, where anyone can correct it. Green slopes: USGS 3D Elevation Program 1 m DEM (public domain). Our maps are open data too. Number & Line isn't connected with the club.