A floatable system, comprising: a floatable structure; and an apparatus for supporting the floatable structure near a surface of a body of water, wherein the system is configured to assume a rest position and orientation when the system is floating at the surface and when the body of water is substantially still, wherein the rest orientation defines a vertical direction extending from the surface to a keel at a lowermost position of the apparatus, the apparatus comprising: a support member, wherein the support member is attached to the additional structure; and a plurality of buoyant units, wherein each buoyant unit is attached to the support member at or near the keel and extends from the keel in a generally longitudinal direction of the buoyant unit, wherein in the rest orientation the longitudinal direction of each buoyant unit extends slopingly upward, defining an angle of approximately between 35°- 65° with respect to the vertical direction, wherein each of the buoyant units comprises a first cross-sectional area at a first portion of the buoyant unit disposed distal from the keel, and a second, smaller cross-sectional area at a second portion of the buoyant unit disposed proximal to the keel, wherein each of the buoyant units further comprises a transitional portion of the buoyant unit disposed between the first portion and the second portion, characterized in that a cross-section at the transitional portion is tapered. a floatable structure; and an apparatus for supporting the floatable structure near a surface of a body of water, wherein the system is configured to assume a rest position and orientation when the system is floating at the surface and when the body of water is substantially still, wherein the rest orientation defines a vertical direction extending from the surface to a keel at a lowermost position of the apparatus, the apparatus comprising: a support member, wherein the support member is attached to the additional structure; and a plurality of buoyant units, wherein each buoyant unit is attached to the support member at or near the keel and extends from the keel in a generally longitudinal direction of the buoyant unit, wherein in the rest orientation the longitudinal direction of each buoyant unit extends slopingly upward, defining an angle of approximately between 35°- 65° with respect to the vertical direction, a support member, wherein the support member is attached to the additional structure; and a plurality of buoyant units, wherein each buoyant unit is attached to the support member at or near the keel and extends from the keel in a generally longitudinal direction of the buoyant unit, wherein in the rest orientation the longitudinal direction of each buoyant unit extends slopingly upward, defining an angle of approximately between 35°- 65° with respect to the vertical direction, wherein each of the buoyant units comprises a first cross-sectional area at a first portion of the buoyant unit disposed distal from the keel, and a second, smaller cross-sectional area at a second portion of the buoyant unit disposed proximal to the keel, wherein each of the buoyant units further comprises a transitional portion of the buoyant unit disposed between the first portion and the second portion, characterized in that a cross-section at the transitional portion is tapered.