Abstract: The disclosure relates to a system for tracking an object that is at least partly buried in seabed, the system comprising: An Autonomous Underwater Vehicle (AUV) having a hull, a controlled electric dipole source mounted on the hull of the AUV; first sensor assembly mounted on the hull in the proximity of starboard side of the AUV (1); second sensor assembly mounted on the hull in the proximity of port side of the AUV; wherein the first and the second sensor assemblies are configured to measure magnetic field from electromagnetic energy transmitted from the controlled electric dipole source. The disclosure further relates to a method of tracking an object that is at least partly buried in seabed.

Abstract: A method for steering an Autonomous Underwater Vehicle along an object buried below a seabed: the AUV being equipped with at least one acoustic transmitter for generating acoustic signal towards the buried object and the seabed; arranging a first sensor assembly flush with the AUV hull of the starboard side of the AUV for recording reflected acoustic signal from the buried object and the seabed, arranging a second sensor assembly flush with the AUV hull of the port side of the AUV for recording reflected acoustic signal from the buried object and the seabed.

Abstract: The disclosure relates to a system for detection and delineation of an object that is at least partly buried in seabed, the system comprising: a marine vehicle (1,10); a controlled electric dipole source (3) mounted on the marine vehicle; a first receiver electrode pair (4) comprising vertical receiver electrodes (4a, 4b) mounted on the marine vehicle, the vertical receiver electrodes (4a4b) separated from one another in the vertical direction of the AUV (1); a 3 axes magnetometer assembly; wherein the receiver pair (4) is configured to measure electric field and the 3-axes magnetometer assembly is configured to measure magnetic field. The disclosure further relates to a method of detection and delineation of an object that is at least partly buried in seabed.

Abstract: The disclosure relates to a system for measuring electric and/or magnetic field of an object, the system comprising: an underwater vehicle comprising: a plurality of links (2a-2d) that are connected to one another by joint modules for generating a flexural motion of the underwater vehicle: wherein the flexural motion devices enable movement of the underwater vehicle and control of the orientation and/or location of the underwater vehicle, wherein the plurality of the links define a hull having a first end (4a) and a second end (4b): a sensor arrangement comprises: a first electrode (6a) mounted on the first end (4a) of the hull: a second electrode (6b) mounted on the second end (4b) of the hull: the first and the second electrode configured to measure electric field of an object, the electric field data sampled with sampling frequencies between 1 and 300 Hz; and/or a first single, 2-, or 3-axes magnetometers (7a) mounted inside the first end (4a) of the underwater vehicle: a second single, 2-, or 3-axes magne

Abstract: The disclosure relates to a system for tracking an object that is at least partly buried in seabed, the system comprising: An Autonomous Underwater Vehicle (AUV) having a hull, a controlled electric dipole source mounted on the hull of the AUV; first sensor assembly mounted on the hull in the proximity of starboard side of the AUV (1); second sensor assembly mounted on the hull in the proximity of port side of the AUV; wherein the first and the second sensor assemblies are configured to measure magnetic field from electromagnetic energy transmitted from the controlled electric dipole source. The disclosure further relates to a method of tracking an object that is at least partly buried in seabed.

Abstract: A method for steering an Autonomous Underwater Vehicle along an object buried below a seabed: the AUV being equipped with at least one acoustic transmitter for generating acoustic signal towards the buried object and the seabed; arranging a first sensor assembly substantially flush with the AUV hull of the starboard side of the AUV for recording reflected acoustic signal from the buried object and the seabed with the first sensor assembly comprising one or more acoustic sensors, arranging a second sensor assembly substantially flush with the AUV hull of the port side of the AUV for recording reflected acoustic signal from the buried object and the seabed with the second sensor assembly comprising one or more acoustic sensors, generating an acoustic signal with a center frequency range between 1 kHz and 24 kHz with the at least one acoustic transmitter, recording reflected energy from the seabed and recording reflected energy from the buried object with the first and second sensors, registering reflected energ