AMERICAN SHIPBUILDING & DESGN HIN Decoder
Hull Identification Numbers beginning with ASO were assigned by the US Coast Guard to AMERICAN SHIPBUILDING & DESGN of MIAMI, FL. The company is recorded as out of business since 1989 — common for older hulls, and useful to know when hunting parts or records. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
ASO
Location
MIAMI, FL
In business
since 1981
Status
Out of business (1989)
AMERICAN SHIPBUILDING & DESGN built hulls across both HIN eras (1981–1989): 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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AMERICAN SHIPBUILDING & DESGN HIN FAQ
What does a AMERICAN SHIPBUILDING & DESGN HIN look like?
It starts with the three characters "ASO" — the Manufacturer Identification Code the US Coast Guard assigned to AMERICAN SHIPBUILDING & DESGN — followed by a 5-character hull serial and a 4-character date code, 12 characters total. AMERICAN SHIPBUILDING & DESGN built hulls across both HIN eras (1981–1989): 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 AMERICAN SHIPBUILDING & DESGN still in business?
USCG records list AMERICAN SHIPBUILDING & DESGN as out of business since 1989. That's common for older hulls — the HIN still decodes normally, and the out-of-business date helps date the boat and guides parts-hunting toward salvage and owner groups rather than a dealer network.
How do I decode the year on a AMERICAN SHIPBUILDING & DESGN HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. AMERICAN SHIPBUILDING & DESGN built hulls across both HIN eras (1981–1989): 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, "AMERICAN SHIPBUILDING & DESGN HIN Decoder," carwhere.com/hin-decoder/aso, last verified 2026-06-12.