Possible Clues:

• A number of sailors have to accept time in slum
• Poor ramshackle area
• Ramshackle area
• In retiring, worker won't put out depressed area
• Deprived area of very poor housing
• Natty outfit displayed round ramshackle area
• Sea song won't be performed in ramshackle area
• Sea air won't wound deprived area
• Failed Facebook game set in 1930?
• Emphatic refusal: won't move after year in slum