Related Clues:

• Boat launch area, perhaps
• Increasingly deep inlet
• Narrow passage of water
• One of many on England's southern coastline
• Sydney Harbour, e.g.
• Shoreline nook
• Crick
• Lake feeder
• Cove's cousin
• Firth of Clyde, for one
• Narrow inlet of a river
• Fjord, for example
• Coastal passage
• Narrow creek
• Sheltered water