Possible Clues:

• Giver of Starbuck's orders
• Melville's whaler
• Husband of Jezebel
• “Moby-Dick” captain
• Moby Dick seeker
• White whale chaser
• 'Thy hour and thy harpoon are at hand!' crier
• Obsessed whaler of fiction
• Obsessed skipper
• Memorable Gregory Peck role