21 foot Alumaweld River Boat for sale. Alumaweld is populared as the manufacturer of superb hefty gauge bonded light weight aluminum boats. This watercraft has a 460 Zodiac Marine engine with Berkeley jet drive. Boat is aluminum with red trim with open bow among 2 swivel, folding seats with bunches of storage areas. Trailer is 1988 Alumaweld tandem. Watercraft is in really good problem among all set to go.