11. Mayday Call
Mayday, Mayday, Mayday, this is Boatname,
Boatname, Boatname. [break]
Mayday, this is Boatname, we are taking on
water and are about to abandon ship.
Our position is:
31 degrees, 23 decimal 45 minutes South,
152 degrees, 15decimal 67 minutes East.
We have two people on board.
18. Distance to Horizon
Yacht A (10 m) - 11.3km (6 NM)
Yacht B (20m) - 16 km (8.6 NM)
Tower (100m) - 35.7 km (19.3 NM)
19. Antennas
• Antennas are matched to a band
(Frequency range)
• VHF and higher bands operate on
the basis of "line of sight"
• Gain, radiation pattern and position
of an antenna are important.