Back to Mobilarm Crewsafe Contact Us  

Regional Profiles

The Crewsafe V100 is configured with a regional profile, described as Open Loop or Closed Loop, that complies with the regulatory requirements for a particular region. The profiles address differences relating to, channels and frequencies of operation, timing and destination of transmissions and message type, category, interval and content.

Regardless of whether the beacon is configured to be Open Loop or Closed Loop, the following features remain the same:

  • Water activation from the READY position and manual activation from OFF
  • Real-time GPS coordinates transmitted via VHF DSC at regular intervals - every 5 minutes in the first 30 minutes, then every 10 minutes
  • 2 to 10NM alerting radius (surface-to-surface) depending on height/altitude of receiving antenna
  • Physical characteristics and integration with lifejackets
Differences between the functionality of each configuration of beacon are listed in the table below. In summary, unlike the Open Loop beacon which transmits a Distress alert to All Stations via VHF DSC and on channel 16 (voice), the Closed Loop beacon can only transmit to up to 8 pre-programmed MMSI numbers, usually the radio MMSI number of the parent vessel and 7 additional MMSI numbers such as the local Coast Guard, harbour master etc. The DSC alert is a Distress Relay alert and no voice transmissions are permitted.
 
Open Loop
Closed Loop
Maximum Transmission Power 1 watt (W) 500 milliwatt (mW)
VHF DSC ALERT
VHF DSC Message Type Distress Distress Relay
VHF DSC Message Destination
1. All ships
2. Group
3. Single ship or station with unique MMSI or up to 8 MMSI
1 3
VHF DSC Transmission Delay
On automatic activation 20 seconds 20 seconds
On manual activation 20 seconds 20 seconds
VHF DSC Transmission Interval
Phase 1 - from minute 0 to 30 5 minutes 5 minutes
Phase 2 - from minute 31 to end of battery life 10 minutes 10 minutes
VHF VOICE ALERT
VHF Voice Message Type Mayday Not permitted
VHF Voice Channels
Emergency 16 Not permitted
Test 67 Not permitted
VHF Voice Transmission Delay
On automatic activation 20 seconds Not permitted
On manual activation 20 seconds Not permitted
VHF Voice Transmission Interval
Phase 1 - from minute 0 to 30 5 minutes Not permitted
Phase 2 - from minute 31 to end of battery life 10 minutes Not permitted
SELF TEST
1. Full function test
2. Full function test without VHF voice
1 2