Possible Clues:

• Hovercraft harbor
• French city closest to England
• Channel Tunnel terminus
• French port nearest England
• Strait of Dover sight
• Bill is to raise and set sail for French port
• Leading edge of Channel unfortunately swamping one French port
• French place in island beset by cold sadly
• French port just up the coast from Boulogne
• Crash at the front unfortunately when crossing one end of the tunnel