the verb is "sailed"
I parked my boat at a harbor
i went to the harbor The boat anchored near the harbor.
The boat motored into the harbor. The harbor was full of sailboats.
My personal research indicates that he sailed there by boat.
Yes, "boat" can serve as a simple subject in a sentence. The simple subject is the main noun or pronoun that the sentence is about, without any modifiers. For example, in the sentence "The boat sailed across the lake," "boat" is the simple subject.
Christopher Columbus sailed a boat and Thomas Jefferson wrote on a piece of paper. The boat that Columbus sailed on sailed
both. you can say "he sailed a boat" in which it's transitive, the direct object being boat. or you can say "she sailed down the river" in which it's intransitive
The phrase "the boat in the harbor" is a fragment because it lacks a complete thought; it does not contain a subject-verb combination that expresses a complete idea. Instead, it presents a noun phrase that describes a boat's location without indicating what is happening with it. For a sentence to be complete, it must convey an action or state of being. In this case, additional information is needed to form a full sentence.
He put it on a boat and sailed it
he sailed a boat ;)
Sinbad sailed on a ship, not a boat. Her name was Chimera.
He sailed from Europe