DUFFY ELECTRIC BOAT CO HIN Decoder
Hull Identification Numbers beginning with DFF were assigned by the US Coast Guard to DUFFY ELECTRIC BOAT CO of ADELANTO, CA. The builder is listed in the USCG MIC database. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
DFF
Location
ADELANTO, CA
In business
since 1973
Status
Listed active in USCG records
DUFFY ELECTRIC BOAT CO built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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DUFFY ELECTRIC BOAT CO HIN FAQ
What does a DUFFY ELECTRIC BOAT CO HIN look like?
It starts with the three characters "DFF" — the Manufacturer Identification Code the US Coast Guard assigned to DUFFY ELECTRIC BOAT CO — followed by a 5-character hull serial and a 4-character date code, 12 characters total. DUFFY ELECTRIC BOAT CO built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is DUFFY ELECTRIC BOAT CO still in business?
USCG records list DUFFY ELECTRIC BOAT CO of ADELANTO, CA in the MIC database (registered 1973).
How do I decode the year on a DUFFY ELECTRIC BOAT CO HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. DUFFY ELECTRIC BOAT CO built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
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Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "DUFFY ELECTRIC BOAT CO HIN Decoder," carwhere.com/hin-decoder/dff, last verified 2026-06-12.