This instrument position is reserved in The Wheelhouse. Its reference material will be stored locally so the tool remains available even when outside pages move or disappear.
Ships and emergency equipment use several different radio systems. These are the main ones a captain is likely to encounter.
Replace the bracketed information with the vessel’s actual details. Speak slowly and clearly.
MAYDAY, MAYDAY, MAYDAY
This is [VESSEL NAME repeated three times].
Call sign or MMSI: [CALL SIGN / MMSI].
Position: [LATITUDE/LONGITUDE or clear location].
Nature of distress: [FIRE / FLOODING / COLLISION / SINKING].
Assistance required: [WHAT YOU NEED].
People aboard: [NUMBER].
Other information: [VESSEL DESCRIPTION / INTENTIONS].
OVER.
PAN-PAN, PAN-PAN, PAN-PAN
All stations, all stations, all stations.
This is [VESSEL NAME repeated three times].
Position: [POSITION].
Urgent situation: [PROBLEM].
Assistance or information required: [REQUEST].
OVER.
SÉCURITÉ, SÉCURITÉ, SÉCURITÉ
All stations, all stations, all stations.
This is [VESSEL OR STATION NAME].
Safety message concerning [HAZARD / LOCATION].
[MESSAGE]
OUT.
This is a quick memory aid, not a replacement for official operator training, current regulations or Coast Guard instructions.
Type ordinary text to create Morse, or enter dots, dashes and spaces to decode it. Separate letters with spaces and words with a slash.
International radiotelephony spelling alphabet.
Enter two values and choose the value to calculate. Distance is in nautical miles, speed in knots and time in decimal hours.
Scope is based on total vertical distance from the seabed to the bow roller.
The calculator supplies arithmetic only. Bottom conditions, wind, current, holding ground, vessel characteristics and local requirements still matter.
Convert common marine distance and speed units without leaving The Wheelhouse.