There is no evidence inside the great pyramid that it was ever intended or used as a tomb, and as I said, there are no Egyptian scripts or hieroglphics anywhere inside that pyramid, other than graffiti that Egyptian fortune hunters left.
There are modern names given to various passages and chambers in the Pyramid, but they they are all assumed labels that modern explorers gave them. There are no Egyptian descriptions of the great pyramid's construction at all, none that are contemporaneous with any of the historical dates given for its construction and nothing, nada, zip inside the Pyramid - unlike every other "tomb" of any size anywhere in Egypt.
The Pharoah Kufu tried to put his name on the great Pyramid, after his workmen could not figure out how to get into the center of the Pyramid. He tried to rewrite the Pyramid's history in what he had historans write at the time, but he failed to destroy the earlier histories that already referred to it long before his time.
Both the great Pyramid and the Sphinx are enigmas (their origins lost in history) and likely predate formal Egyptian history.
So what were the boats for?