Abstract: An autonomous underwater vehicle (AUV) for recording seismic signals during a marine seismic survey. The AUV includes a body extending along an axis X and having a front region, a middle region, and a tail region, wherein the middle region is sandwiched between the front region and the tail region along the X axis. The AUV also includes a seismic payload located within the body and configured to record seismic signals. The tail region has a trapezoidal cross-section.

Abstract: Method and seismic data acquisition system includes a streamer spread including (i) a streamer having receivers for recording seismic data and (ii) a connecting cable connecting the streamer to a towing vessel; a collar device configured to move along the connecting cable, between the towing vessel and the streamer; and a remotely operated vehicle (ROV) attached to the collar device with an umbilical and configured to carry an interchangeable payload.

Abstract: A biofouling removal mechanism includes at least one cleaning element configured to remove accumulated biofouling from a structure and a cleaning element support structure attached to the cleaning element. The cleaning element support structure is configured to secure the cleaning element to the structure, to guide the cleaning element along the structure and to accommodate changes in at least one of a size and a shape of the structure as the cleaning element passes along the structure.