We have developed a flicker-free stereoscopic video system which uses commercial television components. This system has been installed on an underwater remotely operated vehicle (ROV) which is used for service and inspection tasks at a gas production platform 130km off the North-West coast of Western Australia. We report the results of field and laboratory time trials of remote manipulation tas...

This paper presents comes about because of innovation advancement endeavors throughout the most recent 6 years concentrated on submerged unexploded weapons (UXO) discovery and arrangement. Our approach abuses coordinated geo-referenced detecting advancements and have application for undertakings running from ports and harbor improvement to seaward vitality and wind cultivate improvement. Compel...

Underwater vehicles that use differential thrust for surge and yaw motion control have the advantage of increased maneuverability. Unfortunately, such vehicles usually don’t have thrusters/actuators to control the lateral movements. Hence, they fall into the underactuated vehicle category. The goal of the work in this thesis is to develop an autonomous control system for a differential thrust u...

A real-time visual mosaicking and navigation system for use near the sea floor has been developed and deployed as a pilot aid on MBARI ROVs. This system provides high-precision, environment-relative vehicle positioning and control without the use of external positioning arrays. The system uses a live video feed from a camera on the ROV combined with velocity data from an acoustic Doppler veloci...

We previously reported evidence of increased levels of DNA damage in the hydrothermal mussel Bathymodiolus azoricus, which suggested that the species was not fully resistant to the natural toxicity of its deep-sea vent environment. In the present study, HSP70 was used as a biomarker of sub-cellular stress. Differences in HSP70 expression pattern were observed between vent sites, typified by dif...

A miniature sensor for accurate measurement of pressure (depth) with temperature compensation in the ocean environment is described. The sensor is based on an optical fibre Extrinsic Fabry-Perot interferometer (EFPI) combined with a Fibre Bragg Grating (FBG). The EFPI provides pressure measurements while the Fibre Bragg Grating (FBG) provides temperature measurements. The sensor is mechanically...