Possible Clues:

• Person sharing quarters and uniform with ship's officer
• Note written by merchant seaman, one sharing same pad
• Person lived with is monotonous and dull, with little energy
• Following hot drink, the old girl's nursed cohabitee
• Person sharing digs
• Fellow apartment resident
• Likes to share stout including port and Bud?
• Stout friend, about 50, who shares digs
• Stout friend, about 50, one sharing digs
• Line adopted by stout ship’s officer, one sharing accommodation