NEPTUNE YACHT SALES HIN Decoder
Hull Identification Numbers beginning with NYF were assigned by the US Coast Guard to NEPTUNE YACHT SALES of SAN RAFAEL, CA. The company is recorded as out of business since 2004 — 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
NYF
Location
SAN RAFAEL, CA
In business
since 1984
Status
Out of business (2004)
NEPTUNE YACHT SALES built hulls across both HIN eras (1984–2004): 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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NEPTUNE YACHT SALES HIN FAQ
What does a NEPTUNE YACHT SALES HIN look like?
It starts with the three characters "NYF" — the Manufacturer Identification Code the US Coast Guard assigned to NEPTUNE YACHT SALES — followed by a 5-character hull serial and a 4-character date code, 12 characters total. NEPTUNE YACHT SALES built hulls across both HIN eras (1984–2004): 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 NEPTUNE YACHT SALES still in business?
USCG records list NEPTUNE YACHT SALES as out of business since 2004. 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 NEPTUNE YACHT SALES HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. NEPTUNE YACHT SALES built hulls across both HIN eras (1984–2004): 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.
Other builders in CA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "NEPTUNE YACHT SALES HIN Decoder," carwhere.com/hin-decoder/nyf, last verified 2026-06-12.