to 3 p=rson seating,.there is only one model of Yamaha that is 2 person seating, and is=20 obvious when you look at the seat,. One of the previous Yamaha Wave Runners was an estimated 2002 155=20 HP units,.) am positive it was a 155HP unit, just no sure of the year purch=sed, length 124.4 inches width 48" heigh