V-type engine, outboard motor, and vessle

A V-type engine comprising:

• two cylinder banks including N, in which N is an integer not less than 2, first cylinders aligned in a direction parallel or substantially parallel to a crank axis direction and N second cylinders aligned in a direction parallel or substantially parallel to the crank axis direction, the two cylinder banks being disposed along V-shaped lines defined by a first plane passing through center lines of the N first cylinders and a second plane passing through center lines of the N second cylinders;
• N first exhaust ports disposed at an inner side of the V-shaped lines when viewed from the crank axis direction and respectively connected to the N first cylinders;
• N second exhaust ports disposed at the inner side of the V-shaped lines when viewed from the crank axis direction and respectively connected to the N second cylinders;
• a first exhaust manifold including N first branch pipes respectively connected to N exhaust ports that include at least one of the first exhaust ports and at least one of the second exhaust ports, and a first collecting pipe, the first exhaust manifold being disposed adjacent to the N first cylinders, the first exhaust manifold extending from one end to another end of the N first cylinders aligned in the direction parallel or substantially parallel to the crank axis direction;
• and
• a second exhaust manifold that includes N second branch pipes respectively connected to N exhaust ports that include at least one of the first exhaust ports and at least one of the second exhaust ports, and a second collecting pipe, the second exhaust manifold being disposed adjacent to the N second cylinders, the second exhaust manifold extending from one end to another end of the N second cylinders aligned in the direction parallel or substantially parallel to the crank axis direction.