Possible Clues:

• Creep around behind seven others, hiding head in tower
• Provides a warning to those travelling overseas with match crowd
• Edifice with strong beams
• Gentle domestic assistant at sea?
• Blur guitarist
• Overfed boy, it's clear
• Seafarer's aid
• A building in which strong beams are essential
• Tall structure emitting flashes to guide ships
• It may prevent drifters being on the rocks