Tunable sponsons for personal watercraft and personal watercraft having the tunable sponsons. Further, a light emitting device has a plurality of LED elements disposed on a same plane, and a wavelength conversion portion that comprises a flat transparent base member that is disposed opposite to the plurality of LED elements and a phosphor layer that is of a phosphor to be excited by light emitted from the LED element and is formed like a film on the base member. The hanger has a mounting board fitted into the bottom-open pocket and a plurality of hooks respectively extended out of the through holes of the bottom-open pocket for hanging.