Possible Clues:

• A number in authority having week off
• The number one consumed, by the sound of it
• The rowers had a meal, by the sound of it
• Grip oddly adopted by the climbing crew
• Breakfasted soundly at a reasonable time
• Black ball's number
• Cube of two
• Start of prime time, generally
• Soldier seen in the overturned boat
• 'Kate Plus ___'