Garmin VHF 315 Owners Manual PDF - Page 10

calls. Safety calls broadcast significant navigational or weatherrelated information. Urgency calls communicate situations about the safety of a vessel or person when danger is not imminent. The captain should discern whether a situation warrants a safety call or an urgency call. 1 Select DSC > ALL SHIPS. 2 Select SAFETY or URGENCY. 3 Select a channel (Individual Call or Group Call Channels, page 6). The radio transmits the channel request with your call. 4 Select CALL. The radio transmits the call on channel 70, then changes to the selected channel. Individual Call or Group Call Channels When placing an individual or group call, you should select from designated DSC channels. The radio transmits this request with your call. • USA: channels 6, 8, 9, 10, 13, 17, 67, 68, 69, 71, 72, 73, and 77. • Canada and International: all USA channels, plus channel 15 DSC channels are limited to channels that are available in all frequency bands. You can select CUSTOM to select a channel that is not listed. If you select a custom channel, the station you are calling may not be able to comply with the specified channel. You should select a channel that is appropriate for communication. Requesting a Vessel's Position Position data received from stations that respond to position request calls is sent over the NMEA® network. You can track the vessels on your Garmin chartplotter. 1 Select DSC > POS. REQUEST. 2 Select an option: • To enter the MMSI number manually, select MANUAL, enter the MMSI number, and select ACCEPT. • To select an entry from the directory, select DIRECTORY, and select an entry. 3 Select CALL. The radio transmits the call on channel 70 and returns to the previous channel. WAITING FOR ACKNOWLEDGE appears on the screen. Receiving Calls Receiving Distress Calls and Distress Relay Calls When receiving a distress call or a distress relay call, DISTRESS or DISTR RELAY, and information about the call, such as MMSI number and the nature of the distress, appear on the radio screen. A distress call is sent from a vessel in need of assistance, and a distress relay call is sent from either another vessel or a station on behalf of a vessel in need of assistance. The radio sends data related to the call over the NMEA network based on how you configure MMSI filters (Configuring DSC NMEA Transmissions, page 9). NOTE: When a distress call is received, the radio switches to channel 16 automatically after ten seconds. When a distress call is received, select an option: • To view additional information about the distress call and switch to channel 16, select . • To accept the distress call and switch to channel 16, select OK. • To review information about the distress call without switching to channel 16 automatically, select PAUSE. • To ignore the distress call and stay on the current channel, press CLEAR. Receiving All-Ships Urgency and Safety Calls When you receive an all-ships urgency or safety call, ALL SHIPS appears on the screen, and URGENCY or SAFETY appears as the type of call. If the channel request is for an invalid channel, INVALID CH REQUEST appears on the screen. NOTE: When an all-ships call is received, the radio switches to the requested channel automatically after ten seconds. When an urgency or safety call is received, select an option: • To view additional information about the call and switch to the requested channel, select . • To accept the call and switch to the requested channel, select OK. • To review information about the call without switching to the requested channel automatically, select PAUSE. • To ignore the call and stay on the current channel, press CLEAR. Receiving Individual Routine Calls When you receive an individual routine call, INDIVIDUAL appears on the screen, and ROUTINE appears as the type of call. If the channel request is for an invalid channel, INVALID CH REQUEST appears on the screen. NOTE: When an individual call is received, the radio switches to the requested channel automatically after ten seconds. When a call is received on a valid channel, select an option: • To accept the call and switch to the requested channel, select OK. • To review information about the call without switching to the requested channel automatically, select PAUSE. • To ignore the call and stay on the current channel, press CLEAR. Receiving Position Requests You can configure the radio to reply automatically to incoming position requests, or prompt you to review and approve the incoming requests before replying (Sending Automatic Replies, page 8). When you receive a position request with automatic position replies enabled, SENDING ACKNOWLEDGE appears on the screen, and the radio sends your position automatically. After the position successfully transmits, POSITION SENT appears on the screen. When you receive a position request with automatic position replies disabled, POS. REQUEST appears on the screen. When you receive a position request with automatic position replies disabled, select OK, and select an option: • To reply to the position request with your current position, select OK. If GPS-position or manual-position data is available, the radio transmits your position to the other vessel. • To ignore the position request, press CLEAR. Receiving Position Calls When you receive a position call, POS. SEND and the position data appear on the screen. Select OK. The radio saves the position report in the call log. Receiving Group Calls When you receive a group call, GROUP appears on the screen, and the radio prompts you to change to the requested channel. If the channel requested is invalid, INVALID CH REQUEST appears on the screen. 1 Select OK. 2 Turn the ENTER dial to select the requested channel. 6 Digital Selective Calling