Could scrape boxes or anything else, but is called a yacht scraper most often. The heavy top handle/hold down that swivels is unusual. Most of the heavy frame models are stationary.
Getting the barnacles off the bottom of boats is horrible, I hear. Never heard anyone recommend the job anyway. So there were about a million patents over that little chore.
OK plenty of patents regardless.
Leonard Bailey was involved with Sargent for a while. Leonard, the genius of wood tools.
After Leonard got pissed at Stanley he started another company and made tools of his own again. Victor and Defiance tools. Sargent was his biggest distributor.
When the last of Leonard/Stanley's patents ran out, Sargent made bench planes, competing with Stanley, all the way up to 1958. The best of them, the VBM (very best made) models, were made for a shorter time than I thought, until this morning wen I was reading up on it. Just the teens and 20's, more or less.
yours Scot