Marine survey and positioning services, namely, the use of global positioning systems, acoustic sensors, echo sounders, and other marine sensor technologies to ensure accurate positioning of drill rigs, vessels, pipelines, and hydrographic and seismic equipment

'accur':24 'acoust':13 'drill':27 'echo':15 'ensur':23 'equip':35 'global':10 'hydrograph':32 'marin':1,19 'name':6 'pipelin':30 'posit':4,11,25 'rig':28 'seismic':34 'sensor':14,20 'servic':5 'sounder':16 'survey':2 'system':12 'technolog':21 'use':8 'vessel':29

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