Example image of eyePlorer eyePlorer map for 'Distress signal': Helpfulness Radio Aircraft Ship International law Distress Distress radiobeacon International Code of Signals International Regulations for Preventing Collisions at Sea Pan-pan 2182 kHz Hertz High frequency Marine VHF radio Mayday (distress signal) Very high frequency Flare (pyrotechnic) Foghorn Inmarsat-C International maritime signal flags Morse code SOS Cospas-Sarsat Jib Heliograph National flag Argentina Italy Aircraft emergency frequency Harmonic Alpine distress signal Alps Cliché Science fiction Star Trek Global Maritime Distress Safety System International distress frequency Bat-Signal CQD Mission Control Centre (Cospas-Sarsat) Vessel emergency codes 1904 Filipino Monkey Southport and St Anne's lifeboats disaster Fireman's pole SS Edmund Fitzgerald Tactical beacon Unity (Star Trek: Voyager) Cassiopéia Fire station