A tuned mass damper (118, 120) for use with a structure that vibrates at a first axial surge mode and a second axial surge mode, when exposed to a predetermined frequency range, the tuned mass damper (118, 120) comprising: a housing defining a cavity and including an end; an endcap disposed over the end of the housing; a first ring-shaped mass disposed in the cavity and having an inner diameter surface; a first tuned mass damper spring disposed in the cavity coupling the first mass and the endcap; characterized in that the tuned mass damper (118, 120) further comprises: a second ring-shaped mass disposed in the cavity and having an inner diameter surface; second tuned mass damper spring disposed in the cavity coupling the first mass and the second mass; and a shaft extending from the endcap and through the first mass, the first tuned mass damper spring, the second mass, and the second tuned mass damper spring, the shaft having an outer surface; wherein: the tuned mass damper (118, 120) has a first resonant frequency that is in the predetermined frequency range to damp the first axial surge mode, the tuned mass damper (118, 120) has a second resonant frequency that is in the predetermined frequency range to damp the second axial surge mode, and the second mass resonates at an amplitude that is greater than an amplitude at which the first mass resonates, when the first mass and the second mass are subjected to the second axial surge mode, a gap between the outer surface of the shaft and one or both of the inner diameter surfaces of the first and second ring-shaped masses is sized to damp a lateral spring surge mode. a housing defining a cavity and including an end; an endcap disposed over the end of the housing; a first ring-shaped mass disposed in the cavity and having an inner diameter surface; a first tuned mass damper spring disposed in the cavity coupling the first mass and the endcap; characterized in that the tuned mass damper (118, 120) further comprises: a second ring-shaped mass disposed in the cavity and having an inner diameter surface; second tuned mass damper spring disposed in the cavity coupling the first mass and the second mass; and a shaft extending from the endcap and through the first mass, the first tuned mass damper spring, the second mass, and the second tuned mass damper spring, the shaft having an outer surface; wherein: the tuned mass damper (118, 120) has a first resonant frequency that is in the predetermined frequency range to damp the first axial surge mode, the tuned mass damper (118, 120) has a second resonant frequency that is in the predetermined frequency range to damp the second axial surge mode, and the second mass resonates at an amplitude that is greater than an amplitude at which the first mass resonates, when the first mass and the second mass are subjected to the second axial surge mode, a gap between the outer surface of the shaft and one or both of the inner diameter surfaces of the first and second ring-shaped masses is sized to damp a lateral spring surge mode. a second ring-shaped mass disposed in the cavity and having an inner diameter surface; second tuned mass damper spring disposed in the cavity coupling the first mass and the second mass; and a shaft extending from the endcap and through the first mass, the first tuned mass damper spring, the second mass, and the second tuned mass damper spring, the shaft having an outer surface; wherein: the tuned mass damper (118, 120) has a first resonant frequency that is in the predetermined frequency range to damp the first axial surge mode, the tuned mass damper (118, 120) has a second resonant frequency that is in the predetermined frequency range to damp the second axial surge mode, and the second mass resonates at an amplitude that is greater than an amplitude at which the first mass resonates, when the first mass and the second mass are subjected to the second axial surge mode, a gap between the outer surface of the shaft and one or both of the inner diameter surfaces of the first and second ring-shaped masses is sized to damp a lateral spring surge mode. the tuned mass damper (118, 120) has a first resonant frequency that is in the predetermined frequency range to damp the first axial surge mode, the tuned mass damper (118, 120) has a second resonant frequency that is in the predetermined frequency range to damp the second axial surge mode, and the second mass resonates at an amplitude that is greater than an amplitude at which the first mass resonates, when the first mass and the second mass are subjected to the second axial surge mode, a gap between the outer surface of the shaft and one or both of the inner diameter surfaces of the first and second ring-shaped masses is sized to damp a lateral spring surge mode.