90-day Monitoring Report - National Marine Fisheries Service - NOAA

Figure D.22: One of the four lengths of chain used to weigh down the cable.
Deployment
Make sure the data processing unit is off.
Make sure the deck cable is disconnected from the hydrophone cable.
Make sure chains on the hydrophone cable are secure.
Lower the rope drogue and end of the hydrophone cable over the stern and on the port
side of the yellow umbilicals and the spreader rope (rope through stern chock in figure 6)
making sure the elements don’t hit against the vessel.
Feed out the hydrophone from the winch.
Shut off winch controls, connect hydrophone cable to deck cable, turn on data
processing unit.
Retrieval
Make sure data processing unit is off.
Make sure the deck cable is disconnected to the hydrophone cable.
Retrieval is the opposite of deployment.
Make sure the hydrophone elements don’t hit against the stern and store them loosely
around the winch.
HSE
All PPE required while on gun deck, including coveralls, hardhat, steel toe boots, safety glasses
and gloves. Working close to the side, pinch points at the winch, trip hazards, and potential for
jellyfish tentacles on the cable upon retrieval are potential hazards.
UME04085
R.V Marcus G. Langseth
L-DEO/NMFS
05 January 2012
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