Misleading information.
When buying a yacht/boat/ship, intellectual property rights like design, technology, or other creative elements do not automatically transfer to the buyer. While the buyer acquires ownership of the physical yacht itself, the designer or creator typically retains the intellectual property rights.
You know nothing about the contractual arrangements between buyer and seller of a ship and nor are you entitled to. Transfer of intellectual property rights in relation to a ship is quite normal.
You are taking a guilty until proven innocent approach that is defamatory and misleading and deceptive in breach of multiple laws.