Writing Parametric equations.?

At 6:00 a.m. the Princess of the Sea reports that she is located 230 miles due north of Hamilton, Bermuda, traveling south at 15 mph. At the same time, the Atlantic sovereign is 25 miles due west of Hamilton, traveling west at 20 mph. Assuming the ships continue in the same directions at the same speeds write the parametric equations that model the paths of two ships as they would appear on the radar located at Hamilton.