1. A method for assistance in the localization of streamers towed by a vessel including at least one onboard acoustic controller, each of said streamers comprising: geophysical data sensors; acoustic means for measuring distance from at least one adjacent linear antenna; means for the absolute localization of said antennas, the method comprising at least one phase for the generating, by said acoustic controller, of an acoustic cycle determining sequences of acoustic sending and receiving between said distance-measuring acoustic means, wherein the method comprises: at least one phase for defining at least two distinct acoustic cycles each representing a theoretical geometry capable of representing the shape of said streamers; at least one step for determining the real geometry of said streamers; at least one step for detecting a change in real geometry followed by a step for generating a new acoustic cycle, selected from among those defined during said phase for defining and adapted to said change in real geometry.