A marine vibrator system configured to be towed by a survey vessel, comprising: a surface float comprising a plurality of winches; an umbilical cable connected to the survey vessel and configured to tow the marine vibrator system, the umbilical cable being further configured to transmit electrical power, and transmit and receive data pursuant to operation of marine vibrators; a plurality of marine vibrators (100c, 210c), each one of the plurality of marine vibrators comprising: a free-flooding, load-bearing frame suspended from the surface float, the free- flooding, load-bearing frame comprising: a low frequency electro-acoustic projector; a power electronics system; a control-monitoring electronics system; and a pressure compensation system (150c, 160c), wherein each one of the plurality of marine vibrators is negatively buoyant, wherein a submergence depth of the plurality of marine vibrators is controlled using the plurality of winches positioned in the surface float, the plurality of winches being configured to suspend each of the plurality of marine vibrators from the surface float by one or more respective load-bearing cable assemblies connected to the marine vibrator, wherein a towpoint is located on a forward end of the surface float with respect to a direction in which the plurality of marine vibrators is towed, wherein the plurality of the marine vibrators is arranged in a line array, and wherein the umbilical cable is divided within the surface float into a network of smaller, flexible umbilicals, each of the smaller flexible umbilicals being connected to a respective one of the plurality of marine vibrators. a surface float comprising a plurality of winches; an umbilical cable connected to the survey vessel and configured to tow the marine vibrator system, the umbilical cable being further configured to transmit electrical power, and transmit and receive data pursuant to operation of marine vibrators; a plurality of marine vibrators (100c, 210c), each one of the plurality of marine vibrators comprising: a free-flooding, load-bearing frame suspended from the surface float, the free- flooding, load-bearing frame comprising: a low frequency electro-acoustic projector; a power electronics system; a control-monitoring electronics system; and a pressure compensation system (150c, 160c), a low frequency electro-acoustic projector; a power electronics system; a control-monitoring electronics system; and a pressure compensation system (150c, 160c), wherein each one of the plurality of marine vibrators is negatively buoyant, wherein a submergence depth of the plurality of marine vibrators is controlled using the plurality of winches positioned in the surface float, the plurality of winches being configured to suspend each of the plurality of marine vibrators from the surface float by one or more respective load-bearing cable assemblies connected to the marine vibrator, wherein a towpoint is located on a forward end of the surface float with respect to a direction in which the plurality of marine vibrators is towed, wherein the plurality of the marine vibrators is arranged in a line array, and wherein the umbilical cable is divided within the surface float into a network of smaller, flexible umbilicals, each of the smaller flexible umbilicals being connected to a respective one of the plurality of marine vibrators.