Design, Analysis and Installation of Offshore Instrumented Moored Data Buoy System

Abstract

This paper discusses the analysis done on the meteorological ocean buoy mooring used for monitoring the Indian seas. Based on the extreme environmental parameters experienced by the buoys, mooring loads are analyzed using offshore dynamic analysis software. The results obtained are validated with the tension recorder installed in one of the moorings, and the results are found to comply with an accuracy of better than 1%. The successful on demand performance of the mooring during major cyclones in the Bay of Bengal and the vital meteorological and oceanographic information provided by the buoy during these disastrous cyclonic events validates the mooring design, and proves the data availability for societal needs. The time critical data assimilated in the cyclone prediction models have given confidence to improve the country's weather prediction and climate modelling capabilities.

Reliability Metrics From Two Decades of Indian Ocean Moored Buoy Observation Network

“…In order to validate the achieved mooring performance and identify further avenues for improvement, reliability analysis is performed for the operating mooring configuration based on the component failure models published by NSWC and OREDA. The failure rates for the mooring components were computed based on the stresses acting on the mooring components under normal and extreme cyclone conditions, which were obtained from an MSB instrumented with a load cell and self-recording system for a 1-year period (Kaliyaperumal et al, 2015). The FTA results shown in Figure 8 indicate a PoF of 14.7% (Gate Or7) under extreme weather conditions, and this corresponds to an MTBF of 6.3 years.…”

Distribution of the mooring data buoy based on small fishing boat

“…1 A special vessel for the buoy deployment But the disadvantage is that the large vessels, which is expensive and hard to access. Here a novel deploying method is introduced for mooring data buoy based on small fishing boat (the tonnage is about 100t) which is relatively economic [4,5].…”