Regal installs the Seakeeper gyrostabilizer at or on the 53’s center of buoyancy to maximize its effect. Our Seakeeper seriously reduced roll not only when our test boat was at rest but also when she was traveling along at slo-mo speeds. In point of fact, we found that our unit cut the tendency to roll in a beam sea to virtually nothing, a finding that very much impressed the Brathunes. Does it make much noise? Nope!