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The Boater's Guide of Iowa, A Handbook of Boating Laws and Responsibilities Iowa DNR Boater Education logo

It's the Law: Before Going Out

All operators are required to obey laws that regulate your vessel’s registration and operation.

Registering Your Vessel

You must have an Iowa Registration Certificate and registration decals to operate a vessel on Iowa’s public waters legally. Exceptions to registration are:

  • Inflatable vessels that are 7 feet or less in length
  • Canoes and kayaks that are 13 feet or less in length
  • Vessels properly registered in another state using Iowa waters for 60 or fewer days within one calendar year

The Registration Certificate (pocket-sized registration card) must be on board and available for inspection by an enforcement officer whenever the vessel is operated.

Sample of Iowa registration certificate

  • The registration number and registration decals must be displayed as follows.
    • Number must be painted, decaled, or otherwise affixed to the forward half of each side of the vessel, placed for maximum visibility.
    • No other numbers may be displayed on either side of the bow.
    • Number must read from left to right on both sides of the vessel.
    • Number must be in at least 3-inch-high, bold, BLOCK letters.
    • Number’s color must contrast with its background.
    • Letters must be separated from the numbers by a space or hyphen: IA 3717 ZW or IA-3717-ZW.
    • Decals must be affixed on each side of the vessel, toward the stern of the registration number, 4 inches from and in line with the number.
  • If a vessel is propelled by sail alone, the registration number may be placed in a position to provide maximum visibility, including placement on the mast.
  • A sailboard is not required to display the registration number, but the decal must be placed on the bottom surface of the bow of the sailboard.
  • If your vessel requires registration, it is illegal to operate it or allow others to operate your vessel unless it is registered and numbered as described above.
Correct display of registration numbers and decal

Where to Register

The Registration Certificate and registration decals are obtained by presenting the proper application form and fee to the County Recorder in the county of residence of the owner if the owner is an Iowa resident or in the county where the vessel is principally used if the owner is a non-resident.

Registration Questions?

Call the Iowa Department of Natural Resources at 515-281-5918.

Registration Fees (original registration or renewal)

Type and Length of Vessel: Fee
No motor or sail, any length $12.00
Motorboat or Sailboat
Less than 16 ft long (Class I) $22.50
16 ft to less than 26 ft long (Class II) $36.00
26 ft to less than 40 ft long (Class III) $75.00
40 ft long or longer (Class IV) $150.00
Personal Watercraft $45.00
Documented vessel, any length $25.00
Note: An additional $1.00 writing fee is charged by the County Recorder for each registration.

Other Facts About Titling and Registration

  • All vessels 17 feet long or longer that require registration and are purchased new, or are sold or traded, must be titled also. Inflatables and canoes are exempt from titling unless there is a lien against them. Kayaks are exempt from titling.
  • A Registration Certificate is valid for three years and expires on April 30th of the last calendar year of the registration period. Owners of vessels that have been registered previously may be sent a renewal notice to their residence.
  • If a numbered vessel is abandoned or destroyed, or if the owner’s address or name is changed, the owner must notify the County Recorder within 10 days of the event.
  • If you lose or destroy your Registration Certificate or decals, you must apply for a duplicate and pay a $1.00 duplicate fee plus a $1.25 writing fee.
  • Larger recreational vessels owned by U.S. citizens may (at the option of the owner) be documented by the U.S. Coast Guard. Call the USCG’s Documentation Center at 1-800-799-8362 for more information. Documented vessels must be registered and display the registration decal only.
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The Boater's Guide of Iowa, A Handbook of Boating Laws and Responsibilities
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Online boating safety handbook last modified: April 22, 2008
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