Pursuant to 19 CFR 4.2, any small vessel arriving to the United States from a foreign port or place to include any small vessel which has visited a hovering vessel or received merchandise outside the territorial sea, are required to report their arrival to CBP immediately (see 19 U.S.C. 1433).
If you operate any type of motorized vessel on California waterways (including powered sailboats/paddlecraft), you will be required to pass an approved boating safety examination and carry a lifetime California Boater Card.
If your sailboat has no auxiliary power or has an engine with less than 15 horsepower, then certain states don't require a license for recreational use at all. However, if you want to use your sailboat commercially, you'll need a captain's license.
The Cruising Licence does however make clear that the boat can only stay in the USA for a maximum of 12 months and that it is illegal to offer the boat for sale to a US citizen within the USA without paying Import duties.
All passengers are screened at primary inspection and the officer will take your fingerprints digitally (unless you are exempt from this requirement due to age or your visa type). The officer at primary inspection will verify your identity and check your name against various computer databases.
Entering U.S. Waters Carry a passport or other document that denotes identity and citizenship; Stay 100 yards away from all military, cruise lines and commercial shipping vessels; Operate at minimum speed (no wake) and proceed as directed by the Coast Guard or the Navy when within 500 yards of a U.S. Naval vessel;
Since January 2016, ALL foreign-flagged yachts (including any registered under the LBO scheme) MUST obtain a Cruising License/Permit. This can be applied for via ROAM, obtained at the time of entry when filing the CBP-1300 in person, or from the applicable CBP port director.
All people on board (American or Canadian) must have a valid Western Hemisphere Travel Initiative (WHTI) travel document, such as a passport or NEXUS card, to enter the U.S.A. Boaters should always record details of every transaction with CBP in your boat's log book.
Ing to Customs and Border Protection (CBP), the current duty rates that apply to boats are: Sailboats and motorboats other than outboard motorboats: 1.5% Outboard motorboats: 1%
Specific requirements vary from state to state, but over 70% of the U.S. requires boaters who meet certain criteria to take a safety education course. The resulting accreditation is called a certificate, not a license, because it is good for life and doesn't expire.