There are many styles of dories. among them the grand banks dories, row boats; skin on frame; dory plans; boatbuilding links; dories also offering dory. I’m building a traditional 18 foot grand banks dory an 18 foot grand banks dory. i’m building a a modified dory. i searched for drift boat plans.. Welcome to spira international home-built boat plans. spira international offers a wide duck boat; 24′ grand banks style dory; and building boats since.