Related Clues:

• Mechanic, at times
• Fuel carrier
• Navigational aid
• Edmonton skater
• Ship from Valdez
• Crude carrier
• Gretzky, once
• Suez, for one
• Dorothy, for the Tin Man
• Martian marking
• Locks locale
• Spill source, perhaps
• Crude transport
• Titan, formerly
• Greek sandwiches