The DPO is now down to a single position reference (DGNSS 2). Who must be informed immediately, and what should the message convey?

A. The notification can wait until the squall clears and Fanbeam is expected to recover

B. No immediate notification is needed since the vessel is still maintaining position

C. The Master must be informed immediately, including the specific fact that no independent cross-check remains and that the next reference loss would mean total loss of automatic position-keeping — this is a precise, factual escalation, not a vague "having some sensor issues" remark

D. Only the offshore client needs to be told, not the Master

A. Immediately switch to manual joystick control regardless of the remaining references' status

B. Ignore the dropout since two references remain — no action is required

C. Restart the DGNSS 1 receiver immediately without checking the current position solution first

D. Confirm the DP system has automatically excluded DGNSS 1 from the position solution and is now running on the two remaining references (DGNSS 2 and Fanbeam); verify the resulting position solution is stable before doing anything else

A. Increase monitoring vigilance specifically — with only two references, there is no longer a "voting" majority if one of the remaining two starts to disagree, so any divergence between DGNSS 2 and Fanbeam now requires immediate judgement rather than automatic resolution; the DPO should also consider what reference would be left if either of these also fails

B. Nothing changes — two references is operationally identical to three for monitoring purposes

C. Immediately suspend operations regardless of how the two remaining references agree

D. Disable the alarm system since fewer references means fewer expected alarms