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Diving as a profession and sport is and will be one of the most dangerous disciplines known by man. Water is not a natural habitat for humans and people need equipment to breathe underwater. Failure in the breathing apparatus, burst eardrum, decompression sickness and nitrogen narcosis are just a couple of problems which can occur during an ordinary dive and result in injuries, long-term illnesses...
The high-risk nature of SCUBA diving activities is usually dealt with by pairing up divers and adopting well defined rules for diving operations to reduce the chance of accidents. However, during more challenging dives (such as technical dives) these procedures may not be sufficient to ensure almost accident-free operations, for the divers must manoeuvre in complex 3D environments, carry cumbersome...
The construction of one-man-portable marine vessels presents a challenging task. One such vessel, the marine platform described in this paper, is actuated with four thrusters in an X-shaped configuration which enable motion in surge, sway and yaw degree of freedom. This configuration is highly convenient for dynamic positioning as well as path following. The platform is built in the Laboratory for...
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