Connecticut Department of Energy and Environmental Protections Boating Division CT DEEP governs boating in Connecticut. They supervise the Connecticut Safe Boating Certificate

CT DEEP Hull Identification Numbers

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CT DEEP Hull Identification Numbers: What Every Boater Needs to Know

Understanding CT DEEP Hull Identification Numbers is essential for boat registration and legal compliance in Connecticut. Because these numbers uniquely identify vessels, they help prevent theft, fraud, and confusion. Boats built after 1972 must display a valid Hull Identification Number (HIN) to be registered.

Who Needs a Hull Identification Number?

All vessels built after October 1972 require a 12-character HIN. Although older boats may not need one, obtaining a HIN simplifies registration. Homemade boats also require a HIN before they can be legally operated. Therefore, owners must complete the Application for Connecticut Vessel Hull Identification Number and submit it to DEEP’s Boating Division.

How to Apply and Display Your HIN

To apply, boaters must provide vessel details, proof of ownership, and construction information. Once approved, DEEP assigns a unique HIN. This number must be affixed to the starboard side of the transom above the waterline. Additionally, a second hidden HIN must be placed elsewhere on the vessel. Because proper placement is required by law, boaters should follow DEEP’s instructions carefully.

CT DEEP Hull Identification Numbers: Common Questions Answered

The page for HINs has an FAQ section which clarifies many common concerns. For example, there is no fee to obtain a HIN. Most foreign-built boats must receive a Connecticut-issued HIN if registered in the state. Moreover, temporary registration is available while the HIN application is being processed. Boaters must visit the DMV twice to complete this process.

Stay Compliant and Avoid Delays

Before launching, ensure your HIN is properly attached and matches registration documents. Because errors can delay processing, double-check all application details. Keep a copy of your HIN paperwork onboard. In addition, contact DEEP if your HIN plate is damaged or missing. Ultimately, following these steps ensures smooth registration and legal operation.