Hippocampus-shaped bulbous bow type bow structure of marine tug

The invention relates to a hippocampus-shaped bulbous bow type bow structure of a marine tug. The front part of a bulbous bow of the bow structure is positioned below a bow; the front end in the front of the bulbous bow is positioned at the rear part of the head end of a deck; the bulbous bow is hippocampus-shaped; one or more horizontal thrusters are mounted at the rear part of the bulbous bow of the bow structure; each horizontal thruster transversely penetrates through the rear part of the bulbous bow. The bow structure fully takes multiple factors such as ship resistance, sailing, arrangement, horizontal thruster mounting and using functions into consideration, so that compared with an oblique straight bow, the ship sailing economy is improved; the width of a part where a bow thruster is mounted is increased, so that the mounting of the large-diameter bow thruster can be facilitated, and the bow thruster can be conveniently arranged as far forward as possible to effectively improve applied moment of the horizontal thrusters; compared with the conventional bulbous bow type bow, after being close to an FPSO, a marine platform and other marine structures to perform pushing operation, the bulbous bow is free of collision with a pushed ship or a platform when the ship is in any longitudinal floating state, so that the head structure safety of the ship is ensured.