COASTLINE SPORTS HIN Decoder
Hull Identification Numbers beginning with XDF were assigned by the US Coast Guard to COASTLINE SPORTS of KEEGO HARBOR, MI. 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
XDF
Location
KEEGO HARBOR, MI
In business
since 1997
Status
Out of business (2004)
COASTLINE SPORTS hulls (1997–2004) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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COASTLINE SPORTS HIN FAQ
What does a COASTLINE SPORTS HIN look like?
It starts with the three characters "XDF" — the Manufacturer Identification Code the US Coast Guard assigned to COASTLINE SPORTS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. COASTLINE SPORTS hulls (1997–2004) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is COASTLINE SPORTS still in business?
USCG records list COASTLINE SPORTS 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 COASTLINE SPORTS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. COASTLINE SPORTS hulls (1997–2004) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in MI
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "COASTLINE SPORTS HIN Decoder," carwhere.com/hin-decoder/xdf, last verified 2026-06-12.