Related Clues:

• Teacher's backup, for short
• Loan shark, unspeakable blackguard first of all
• Player coming off the bench, for short
• Temporary teacher, informally
• Long sandwich, for short
• Red October, e.g
• Meatball sandwich
• Long order
• Replacement transport heading north
• The Crew: Mission Deep Sea vessel, informally
• Down under vehicle?
• Vessel with a hatch, informally
• Replace one sort of vessel
• Place in Waterford is under study?
• Stand in use finally, after furious dispute