Possible Clues:

• Sounds as if a vessel sprang such a hole vegetable in the bottom up here
• Bottom up for Wales!
• 6 Down kin
• Kin of 63-Across
• Vichyssoise onion
• Bottom up for the boat for Wales
• (Welsh?) vegetable
• Veggie that looks like an overgrown scallion
• National symbol is close to bell with a frightening sound
• Vessel returns, displaying national emblem