Global Offshore AUV Market By Type (Shallow AUV (depth up to 100 m) , Medium AUVs (depth up to 1000 m) , and Large AUVs (depth more than 1000 m)), By Application (Defense , Scientific Research , and Commercial), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029