Possible Clues:

• Alter to fit
• Take in, perhaps
• Man of cloth redeveloped Rialto
• Person who alters clothing
• Pro at alterations
• Boatman changes heading: he knows how to tack
• Seaman gets new beginning — he’s working in menswear
• Maker of uniforms possibly to follow common soldiers
• Custom-fit
• Professional with a fitting job?