As some followers commented, the cover image belongs to the boats that facilitate the access and exit of large vessels to the ports of Cuba.
These boats have a hull reinforced mainly in the bows and fins. The citadel (cabin) is narrow on the sides for the safe passage of the pilot on board. The hull is deep V, with space to protect the pilot from getting caught against the hull of the ship when boarding it.
The capacity of its main engines is 400 horsepower or greater, to allow the accompaniment of ships and to navigate at high speeds. The construction material is reinforced polyester.
The separation distance between the frames is not greater than one meter, except for the bow to the beginning of the bridge on both sides, with no more than 50 centimeters between them.
It has a reinforced joint between the side and the hull's hull, and this with reduced friction when advancing. Also visibility on the bridge in all directions.

The deck of the boat must be wide and non-slip, with railings along its entire length. The length of the boat is between 9 and 15 meters. They are characterized by the black color on the hull, orange on the deck, white on the bridge and the name of the Pilots visible.