Past Simple:1) The cadets defined ship's position every lesson.2) The ship called at many ports.
Future Simple:1) The cadets will define ship's position every lesson.2) The ship will call at many ports.
Past Simple:
1) The cadets defined ship's position every lesson.
2) The ship called at many ports.
Future Simple:
1) The cadets will define ship's position every lesson.
2) The ship will call at many ports.