Abstract: An articulated self-propelled tug and boat trailer. The trailer is mounted on wheels and includes a laterally opposed pair of generally parallel spaced apart longitudinally extending hull supporting members connected by cross members. The hull supporting members are pivotable about the trailer wheels. Independently actuable hydraulic rams selectively or simultaneously elevate either or both of the longitudinally extending hull supporting members relative to the trailer wheels. The cross members which rigidly mount the hull supporting members to a universal articulatable joint having three rotational degrees of freedom. A self-propelled tug is the opposite side of the universal articulatable joint. Independent hydraulic rams independently and selectively pivot the trailer and the tug relative to each other about each of the three rotational degrees of freedom. The tug has drive wheels for selectively self-propelled translation of the tug and the trailer.