Related Clues:

• Dark shade of blue
• Maritime force
• School whose 1910 football team went undefeated and unscored upon
• It has many fighters
• The Midshipmen
• Colour of the fleet
• A dark shade of blue
• Shade of the marine forces
• Sounds plain enough to be measured on the Beaufort Scale, perhaps
• All at sea? No, only about five of them
• Sounds all plain on the Beaufort Scale, perhaps
• The sort of flight that might be measured on the Beaufort scale
• That could be so offensive on the Beaufort Scale
• What sounds plain in it may perhaps be measured on the Beaufort Scale
• Sounds like a plain matter for the Beaufort Scale