What the Wartime Paper Trail Proves About Penn Yan's Model AT

The wartime history of Penn Yan Boats contains stories that are often repeated more confidently than the surviving online evidence allows. The strongest digital record begins with something narrower but concrete: the document system built around an 18-foot boat called the Model AT.

A federal government-publications catalog records Engineer Corps Technical Manual 5-8020. The entry describes a maintenance manual and parts catalog for an 18-foot Model AT utility power boat and associates it with Penn Yan Boats, Inc. It dates the item March 28, 1942.

A War Department index dated January 20, 1945 lists TM 5-8020 again, this time with a December 3, 1943 date and the description “Boat, Utility, Power, 18-ft. Penn-Yan, Model AT.” Without the underlying manuals or their change notices, the two dates should not be forced into an invented revision history. They establish a documentary sequence that still needs explanation.

The same 1945 index reveals that the boat's paperwork extended beyond one manual. Its lubrication-order section lists WDLO 1057, dated November 24, 1943, for the gasoline-powered 18-foot Penn Yan Model AT. The BOATS index points readers to TM 5-8020, Technical Bulletin 5-8020-1, and Lubrication Order 1057.

That publication family is evidence of technical administration: a named boat, a maintenance-and-parts reference, a bulletin, and a lubrication order. It is not, by itself, evidence of a specific contract, production quantity, delivery, unit assignment, or operation. The underlying documents have not yet been recovered in the accessible digital search.

A separate War Department record places the company in the national production-award system. On December 5, 1945, a joint Army-Navy release announced the termination of the Army-Navy E Award program and listed Penn Yan Boats, Inc., of Penn Yan among the New York recipients.

The release counted 4,283 recipient facilities and estimated that they represented about five percent of eligible plants. It described quality, quantity, labor, safety, management, and conservation among the program's possible considerations. But its New York list does not explain which of those factors applied to Penn Yan, identify a product, give the local award date, or supply a plant nomination file.

Read together, the records prove two connected but distinct facts. The Model AT occupied a defined place in the War Department's technical-publication system, and Penn Yan Boats appeared on the official E Award recipient list. The records currently available online do not prove that the award was for the Model AT, nor do they establish how many boats were built or where they served.

That boundary is part of the history. A responsible account can show what the documentary trail confirms while turning its silences into precise archival questions: Where are the manuals? Which contract ordered the boats? Who built them? What did the company-specific award file say? Which units received them?

The result is not the end of the Model AT story. It is a reliable foundation for the deeper one.

Source note

The March 28, 1942 TM 5-8020 entry appears on printed page 135 (PDF page 139) of the GovInfo Supplement to United States Government Publications Monthly Catalog, 1941-1942. The December 3, 1943 manual entry, November 24, 1943 lubrication order, and BOATS cross-index appear on printed pages 67, 96, and 108 (PDF pages 68, 97, and 109) of the January 20, 1945 FM 21-6, List and Index of War Department Publications, preserved by HyperWar at ibiblio. The award-program overview and Penn Yan entry appear on PDF pages 1 and 10 of the War Department's December 5, 1945 joint Army-Navy release, preserved on Wikimedia Commons. This story paraphrases and cites those records and reproduces no scan or source media.