What happened to the unmanned floating boat in the sea?

On February 28th, A.D. 1855, an English three-masted sailboat named "Maraton" was sailing in the North Atlantic, preparing for the United States. They met an American dhow named Durimus Cheshire. I saw that the sail of the ship had fallen and drifted slowly with the wind and waves. There was no one on board, no place on board was damaged, the goods on board were intact, and the fresh water and food on board were particularly abundant. There is no trace of disturbance on the ship, but there is not even a nautical chart and a compass on the ship. It is suspected that the people on board took all charts and compasses with them when they escaped.

The captain of the British "Maraton" decided to tow the American "Durimus cheshier" to the United States and give it to the Americans. In this way, maybe we can figure out the reason.

However, when the crew of the British "Maraton" towed the American three-masted ship to new york, they asked people that the crew on board would never come back. Moreover, these crew members have not been found in other parts of the world.

In A.D. 1880, a sailboat named "Sebald" was found in the waters near Newport, Rhode Island, USA. The scene on the ship is the same as mentioned before. Everything on board was intact, and there was still a hearty breakfast in the captain's cabin. There is still no one on board.

18811February 12, an American motorized sailboat named "Allen Austin" also found a sailboat drifting with the wind in the North Pacific Ocean. There is food, fresh water, fruit and beer on board, but there is no one.