General Emergency: 7 short and 1 long signal
Fire on board: 2 short signals and repeted rapid alarm bells during 10 seconds and you listen to some one say "India Victor"
Leak(afundando): 2 short signals and say two times "Delta X ray, Delta X ray"
man over board(homem ao mar): 1 long signal and say "Oscar"
Abandon the ship: Order by captain by speaker