If the ship traveled 100 miles to the north, it sailed for a distance of 3 * 100 miles = 300 miles to the east on the second day.
On the third day, the sheep sailed for 300 miles + 110 miles = <<300+110=410>>410 miles.
The distance covered by the ship in the three days is 410 miles + 300 miles + 100 miles = <<410+300+100=810>>810 miles
#### 810