Related Clues:

• Large number of ships (Spanish?)
• Fleet - blue
• Ships - blue!
• Blue - service
• Blue - ships and seamen
• Nation's warships
• Senior service
• (Spanish) fleet
• Seagoing military force
• Army's football rival
• Armed service
• The blue of many blazers
• Oldest British service branch
• Philip II's force
• Looking back, first man to artist puts up a fight at sea