Similar to 非常用位置指示無線標識装置

Dangerous goods

Day shapes

International Maritime Organization

Comité Maritime International

Stabilizer (ship)

911 (emergency telephone number)

ECall

RECCO

SOS

Apple Watch

Ukraine Siren Alerts

S-GPS

Transponder

Pan-pan

Mayday

BPM (time service)

WWV (radio station)

WWVB

WWVH