Related Clues:

• Beach memento
• Gear for a trireme
• Hard covering
• Argo's array
• Coxswain's demand
• Shell contents
• Crew's control?
• Kerfuffle
• Pair at the lake
• Lifeboat needs
• Crew needs
• Regatta requirement, sometimes
• Tumultuous quarrel
• Word from a coxswain
• Tier