51.   Rescuers searched the cold, choppy waters of Georgian Bay on Friday for two seventh-grade students missing after a tour boat sank during a school outing.

52.   The captain of a Mexican tour boat that capsized, killing three Americans, will be charged with involuntary manslaughter, authorities said Monday.

53.   The tanker regularly transported diesel and bunker, a heavy fuel used by tour boats, into the Galapagos from the mainland.

54.   Two police boats escorted the tour boat, and the curious trotted along the canals for a glimpse of the first lady.

55.   Tour boats are not allowed out to disturb the mammals, although that policy is under review.

56.   Tour boats now slide through the gorges, guides encouraging tourists to spot the settings of ancient legends.

57.   Tour boats periodically run aground on the Nile at this time of the year between irrigation seasons when the authorities hold up water in the reservoir.

58.   Tour boats are common in summer on the Ottawa River.

59.   Tour boats periodically run aground during this time of the year, which is between the irrigation seasons.

60.   Twenty people were reported missing Friday after a Nile tour boat ran aground during a storm in southern Egypt, the Middle East News Agency said.