Design, computer lofting, and kits for welded aluminum boats. specmar inc (previously specialty marine contractors) is an aluminum boat design, lofting, and kit company.. Comments about west marine rib-350 double floor hypalon inflatable boat, gray: so far so good . i have only had the rib-350 a few weeks . i like the way the hull is. Pete bethune launched the new earthrace vessel at westhaven marina in new zealand. he and his crew have their sights set on tackling illegal fishing off.