In 1927, A. C. Brown & Son of Tottenville Staten Island launched their tugboat Dynamic, one of dozens of commercial vessels, sailboats, yachts, and barges.  The image below is from a sales brochure currently in CSNY collection.

Compare that photo with one a few years later, part of the Michon Collection.  Spot any differences?  Account for those differences?

As you ponder the question, here are more pages and details from that 1927 sales brochure.

Again, why the difference?

Ready for the answer?  The tugboat was seriously damaged in a gasoline explosion and fire in Troy in October 1930.  It was rebuilt and returned to service.  The Tottenville tugboat appears in the Merchant Vessels of the United States as late as 1951.

Possibly somewhere in the CSNY collection or elsewhere there’s an image of Dynamic working later in its career?