Related Clues:

• Armed forces of the oceans
• Military forces at sea
• They're all at sea, yet able to make one sane about six
• Just sane about six, yet they're all at sea
• Do they turn up to make the metal loud over seas
• They're fleet, but not of foot
• Six in a sane setting at sea
• Combatants at Trafalgar
• Fishing collectives
• Military fleets
• Groups of limos, e.g
• Groups of vehicles
• A struggle between North and South Sea forces
• Naval units
• Groups of warships