PENINSULAR & OCCIDENTAL STEAMSHIP CO.
image by Joe McMillan, 12 November 2001
The flag is a blue-and-white lozengy burgee, with red P&O initials on the central white lozenge. China illustrated on steamship.net instead shows blue initials. FOTW’s earlier British attribution showed black letters; Joe McMillan corrected the company’s nationality to American.
Ships & The Sea 1938 notes the change to this funnel.