And what is that? A solid ride for its size. The Ocean Master 390, from Australia, features a lightweight yet rugged aluminum hull with a military pedigree. The hull is powder-coated to protect it from the corrosive effects of saltwater duty, and it has a 20-degree transom deadrise. But what makes it a RIB is the pairing with an inflatable PVC collar. The collar, with three separate chambers, adds buoyancy to the package while acting like a shock absorber for a pounding bay chop. This boat has a seven-person capacity or a total load of 1,542 pounds. Four is the most I’d want aboard, but it’s nice to know it can handle extra crew.