246 DSC OPERATION➥ A distress alert contains (default);• Nature of distress : Undesignated distress• Position data : GPS or manual input position data heldfor 23.5 hrs or until the power is turnedOFF.➥ The distress call is repeated every 3.5–4.5 min., untilreceiving an ‘acknowledgement.’➥ Push [CLR] to cancel the ‘Call repeat’ mode.➥ “??” may blink instead of position and time indicationswhen the GPS data is invalid, or has not been manu-ally updated after 4 hours.D Regular callThe nature of the distress call should be included in the dis-tress call.q Push [MENU] to enter the DSC menu.w Rotate [CHANNEL] to select “Distress Setting,”and push [CHANNEL•ENTER].--DSC Menu--Select ItemAll Ships CallPosition RequestPosition ReportPolling RequestReceived Calls˘Distress Settinge Rotate [CHANNEL] to select the nature of the distress,push [CHANNEL•ENTER].• ‘Undesignated,’ ‘Explosion,’ ‘Flooding,’ ‘Colli-sion,’ ‘Grounding,’ ‘Capsizing,’ ‘Sinking,’ ‘Adrift(Disable adrift),’ ‘Abandoning (Abandoning ship),’ ‘Piracy(Piracy attack)’ and ‘MOB (Man overboard)’ are available.• The selected nature of the distress is stored for 10 minutes.--DSC Menu--Select NatureUndesignated˘ExplosionFloodingCollision˘Exit / ENT˘OK>