Thereby, {HEAD ~ a single retrievable buoy anchoring drilling device} can be used to anchor {TAIL ~ a plurality} of anchorable marker buoy assemblies such as used to mark the underwater locations for placement of cables or pipelines such as without limitation, a gas pipeline and an oil pipeline 
used to anchor
Thereby , { HEAD ~ a single retrievable buoy anchoring drilling device } can be used to anchor { TAIL ~ a plurality } of anchorable marker buoy assemblies such as used to mark the underwater locations for placement of cables or pipelines such as without limitation , a gas pipeline and an oil pipeline
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH