This map of Cape Cod could be useful if you are planning a trip to Martha's Vineyard.
The Cape is only about a 45 - 75 minute ferry boat ride away from the Vineyard so you might want to visit for a day or more. Learn more about Cape Cod
Of course, unless you are visiting the Vineyard from the south or by plane, you will also likely travel to either Woods Hole or Hyannis to catch your Martha's Vineyard ferry.
The first map below shows the majority of Cape Cod, from East Falmouth to Provincetown.
The second map shows a closer view of Woods Hole.
The third map shows a closer view of Hyannis.
These are Google maps, so you can click on them and drag to shift the map to the north, south, east or west. You can also change the zoom level by clicking the [+] and [-] buttons on the top left of the map.