Patent ID: 8366501

Claim:
An outboard motor comprising: an engine including a plurality of cylinders that are aligned vertically, and a plurality of exhaust ports to which exhaust is guided from the plurality of cylinders; a housing including an interior arranged such that exhaust guided from the plurality of exhaust ports is guided to the interior of the housing, and a partitioning wall arranged to partition the interior of the housing into a first exhaust space connected to the plurality of exhaust ports and a second exhaust space connected to the first exhaust space, the housing arranged such that the first exhaust space collects and guides the exhaust guided from the plurality of exhaust ports and that the second exhaust space is disposed at a same side as the first exhaust space with respect to a plane that includes central axes of the plurality of cylinders; a catalyst provided in the housing, the catalyst positioned at a height such that at least a portion of the catalyst overlaps with the first exhaust space when viewed from a horizontal direction, the catalyst disposed in the second exhaust space so as to guide exhaust guided from the first exhaust space to the second exhaust space; and an engine cover housing the engine and the housing.