Context—Driveline bearing seizure on the USNS Watson, a new ship in the "Roll-On – Roll-Off" US Navy fleet stationed at the Norfolk Naval Shipyard in Norfolk, Virginia.
Our role—Callon Dietz was contracted by LamaLo Technology to perform a hull deflection analysis to assist in corrective measures for the USNS Watson and for future ship construction. As measurement specialists, we provided a simultaneous, multiple-station measurement solution.
Our first step was to simultaneously record positions at nine strategic locations along the deck centreline as the ship entered dry dock. Trimble 4600 GPS receiver stations were mounted along the ship’s linear axis in strategic places to reduce the effect of multi-path and to model the amount of "hull hogging" or distortion in the ship’s hull.
Measurements were recorded at 30 second intervals over a period of more than four hours. Two base stations were mounted nearby to mitigate GPS signal errors. Resulting measurements created a snapshot in time of the relative
deflection between stations while the boat was in motion.
Our role—Callon Dietz was contracted by LamaLo Technology to perform a hull deflection analysis to assist in corrective measures for the USNS Watson and for future ship construction. As measurement specialists, we provided a simultaneous, multiple-station measurement solution.
Our first step was to simultaneously record positions at nine strategic locations along the deck centreline as the ship entered dry dock. Trimble 4600 GPS receiver stations were mounted along the ship’s linear axis in strategic places to reduce the effect of multi-path and to model the amount of "hull hogging" or distortion in the ship’s hull.
Measurements were recorded at 30 second intervals over a period of more than four hours. Two base stations were mounted nearby to mitigate GPS signal errors. Resulting measurements created a snapshot in time of the relative
deflection between stations while the boat was in motion.
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