21.   The ship was so far away that we could hardly see it.

22.   The ship was so slow it dropped far behind the rest of the convoy.

23.   These ships were regular visitors for over twenty years.

24.   Without them, the ships are of questionable value.

25.   The ship was now ablaze, and the only escape was to take to the lifeboats.

26.   The operator expects the ship to be out of commission until the end of September.

27.   The captain radioed that the ship was on fire.

28.   Within ninety minutes the ship was ready for departure.

29.   The ship will not be ready for a month.

30.   Both ships are fairly new.