Related Clues:

• Mariner's place
• Base place
• Shea shape
• Piracy place
• Swell place
• Buccaneer's bailiwick
• Place for 18-Across
• Briny expanse
• Top of the Mohs scale
• Briny deep
• Sailing place
• Spot for 24-Across or 6-Down
• Deep water
• Tar's milieu
• Red card