2017 OWNERS MANUAL / 34
OTHER  
IMPORTANT 
INFORMATION
distress alert with registration information to the responsible U.S. 
Coast Guard (or International) Rescue Coordination Center (RCC). 
 
406MHz EPIRBs with GPS (internal or attached) also provide an 
immediate GPS position in the information passed to the RCC. 
 
Geostationary satellites make detection almost immediate. If the 
EPIRB does not have the ability to provide a GPS position, the pro-
cess to determine a position takes about an hour on average and 
almost always less than two hours. Satellite EPIRBs also include a 
homing beacon and strobe to help rescue forces quickly locate the 
distress scene. 
 
Satellite beacons have significant coverage, alerting timeliness, 
position accuracy, and signaling advantages over other types of 
EPIRBs (121.5 MHz). Before purchasing or using something other 
than the 406 MHz EPIRB, be sure to understand the capabilities 
and limitations.  
 
Further information and a complete listing of VHF channels and 
frequencies is available at: www.navcen.uscg.gov.
COMMUNICATIONS 
 
The following applies to the Great Lakes and salt water boating:
When boating o-shore, carry communications gear such as a ma-
rine VHF-FM and/or HF transceiver(s), appropriate to the operating 
area. Cellular phone coverage is available in many coastal areas. 
However, cellular phones should NOT be considered a substitute for 
VHF-FM marine band radios for emergency purposes. 
 
In distress situations, press the VHF transmit button and clearly 
say: MAYDAY, MAYDAY, MAYDAY. Follow this with the vessel name 
and/or description, the location, nature of emergency and number 
of people on-board. Then release the transmit button and wait for 10 
seconds. If there is no response, repeat the MAYDAY call. 
 
Satellite EPIRBs (406 MHz) are designed to quickly and reliably 
alert rescue forces, indicate an accurate distress position, and 
guide rescue units to the distress scene, even when all other com-
munications fail. 
 
When activated, the satellite EPIRB transmits a distress signal with 
a beacon-unique identifying code. The system detects the signal, 
calculates an accurate distress position, checks the unique iden-
tifying code against the EPIRB registration database (vessel and 
point of contact information supplied by the owner) and routes the