Related Clues:

• Oceangoing pro, slangily
• Paving crew's goo
• Sailor, one leaving ship when capsized?
• Dirt alternative, at times
• Deserter heading north is a sailor
• Sticky sealant
• Verbally thanks sailor
• Driveway-topping goo
• Viscous sealant
• Taken as read initially, something black
• The stuff of many roofs
• Roofer’s goo
• Gunk in a pit
• Goo used in roof work
• Sailor, famous person, heading off