Heavy Weather Custom Boat

Heavy Weather Custom Boat — HIN at a glance

Decode a Heavy Weather Custom Boat HIN

Paste any HIN starting with HWB — we'll decode the serial number, build month, build year and model year instantly.

Try a sample:

• HWB10001K405
• HWBA0042L323
• HWBB5678H222

About the USCG HIN format

Heavy Weather Custom Boat is registered with the US Coast Guard and stamps a standard 12-character Hull Identification Number on every vessel produced for the US market. The format breaks down as:

HWB NNNNN M Y YY
└┬┘ └──┬──┘ │ │ └┬┘
 │    │     │ │  └─ Model year (last two digits)
 │    │     │ └──── Production year (last digit, 1972 standard)
 │    │     └────── Production month (A=Jan, B=Feb ... L=Dec, skipping I)
 │    └──────────── Hull serial number (alphanumeric)
 └─────────────── MIC: Manufacturer Identifier Code (HWB)

Federal regulation 33 CFR § 181 requires every US-built or imported recreational vessel to display this HIN permanently on the upper starboard side of the transom, and a duplicate HIN in a hidden location inside the hull.

Other Alaska boat manufacturers

• Arctic Fiberglass LLC (AFL)
• Atec (AIK)
• Alaskan Aluminum Power Catamarans LLC (AKC)
• Alaska Homemade Boats (AKZ)
• Alibi Boats (ALK)
• Alaska Series Inflatable Boat (ASI)
• Bamf Boats, LLC (BFB)
• Broken Rudder INC (BRK)
• Cook Inlet Boats (CBI)
• Crew Enterprises (CED)
• Class 5 Boatworks LLC (CFM)
• Crafts Of Nowhere (CNW)

See all Alaska manufacturers →

Frequently asked questions