- Stock #400508 - Very well maintained boat with shiny gel coat. 200 hp Yamaha 200 Four Stroke with only 104 houra Shoalwater 21 Catamaran with 200 hp Yamaha Four Stroke Very well maintained by the owner and local mechanic shop for servicing. This boat was kept inside all of its life. The gel coat is shiny and all fittings are in great condition. Well appointed with all the options one usually wants on a Flats Center Console Fishing Boat: Powered Jack plate, Power Pole, Trolling Motor with Gel batteries, pole holders, and live wells. For nighttime fishing and running at night....this boa... read more