It is amazing the difference just a few inches can make. The 548 model has a 48 inch bottom width. The wider bottom gives you more stability and less pitch. It also adds an extra 6 inches of floor space compared to our 542 model. The 548 comes only in a LDV model. This model has a V-hull, a low front casting deck and a rear cross-seat. It also includes one base plate and a 1/4 inch center keel (standard).Built strong using the all welded hull method in 0.100 gauge aluminum. The same gauge used to build larger models up to 23 feet. This is the toughest 15 foot boat you can buy!