The electronic control box and acceleration sensor on the bow immediately creates up and down forces to compensate the buoyancy changes. The bow does not have to be submerged to create lift. By having less water on the deck and less water impact, weight is reduced, speed is increased, equipment failure is minimized and most importantly, crew members are kept safe. In the past, astern water ballast tanks have been used for the Volvo Ocean Race sailboats and similar projects. With the SBS system the astern ballast is obsolete. On aft winds sailing under gennaker or spinnaker, the bow will not be flooded anymore. In heavy seas, lowering the two SBS wings even more, the not flooding of the bow is assured.