Number of input and output field

Number of input field	:	One
Number of output field	:	One

This transformation function is used to decode AIS ( Automatic Identification System) messages. The decoding result is in JSON format, and the content depends on the message type.

Here below are samples of content for some message types.

message-type : BaseStationReport :
{"messageType": "BaseStationReport","nmeaMessages": ["!AIVDM,1,1,,B,4050KsQvEF:bNWjsjIsTfD700D0J,0*4F"],"metaData": {"source": "SRC","received": "2021-05-12T10:42:30.669Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "5250030","year": "2021","month": "5","day": "12","hour": "10","minute": "42","second": "30","": "true","latitude": "-7.7353334","longitude": "108.993835","positionFixingDevice": "Surveyed","raimFlag": "false","communicationState()": {"syncState": "UTCDirect","slotTimeout": "5","numberOfReceivedStations": "26","slotNumber": "null","utcHour": "null","utcMinute": "null","slotOffset": "null"},"valid": "true"}

message-type : DataLinkManagement :
{"messageType": "DataLinkManagement","nmeaMessages": ["!AIVDM,1,1,,B,D050KsP?TN?`fpNfp0,4*3C"],"metaData": {"source": "SRC","received": "2021-05-12T10:42:30.940Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "5250030","offsetNumber1": "249","reservedSlots1": "1","timeout1": "7","increment1": 250","offsetNumber2": "750","reservedSlots2": "1","timeout2": "7","increment2": "750","offsetNumber3": "null","reservedSlots3": null","timeout3": "null","increment3": "null","offsetNumber4": "null","reservedSlots4": "null","timeout4": "null","increment4": "null","valid": "true"}

message-type : PositionReportClassAScheduled :
{"messageType": "PositionReportClassAScheduled","nmeaMessages": ["!AIVDM,1,1,,A,17lg< V0P007kUhosVIls7?vr0>0L,0*20"],"metaData": {"source": "SRC","received": "2021-05-12T10:42:28.916Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "525061272","navigationStatus": "UnderwayUsingEngine","rateOfTurn": "-128","speedOverGround": "0.0","positionAccuracy": "false","latitude": "-7.6894617","longitude": "109.137115","courseOverGround": "284.4","trueHeading": "511","second": "29","specialManeuverIndicator": "NotAvailable","raimFlag": "false","communicationState": {"syncState": "UTCDirect","slotTimeout": "3","numberOfReceivedStations": "28","slotNumber": "null","utcHour": "null","utcMinute": "null","slotOffset": "null"},"transponderClass": "A","rawSpeedOverGround": "0","rawLatitude": "-4613677","rawLongitude": "65482267","rawCourseOverGround": "2844","valid": "true"}

message-type : PositionReportClassAResponseToInterrogation :
{"messageType": "PositionReportClassAResponseToInterrogation","nmeaMessages": ["!AIVDM,1,1,,B,37liW9H0027k1`qsT8ah4Ppr0Cie,0*43"],"metaData": {"source": "SRC","received": "2021-05-12T10:42:29.434Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "525100837","navigationStatus": "UnderwaySailingUnderwaySailing","rateOfTurn": "0","speedOverGround": "0.2","positionAccuracy": "false","latitude": "-7.751402","longitude": "109.01381","courseOverGround": "1.8","trueHeadin": "28","second": "29","specialManeuverIndicator": "NotAvailable","raimFlag": "false","communicationState()": {"syncState": "UTCDirect"},"transponderClass": "A","rawSpeedOverGround": "2","rawLatitude": "-4650841","rawLongitude": "65408284","rawCourseOverGround": "18","valid": "true"}

message-type : ShipAndVoyageRelatedData :
{"messageType": "ShipAndVoyageRelatedData","nmeaMessages": ["!AIVDM,2,1,2,A,57liW9H2EL2=T9a?:20eBp`5T4pDL5863?3R220l1PM664000054R@C88888,0*69","!AIVDM,2,2,2,A,88888888880,2*26"],"metaData": {"source": "SRC","received": "2021-05-12T10:42:23.259Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "525100837","imo": "9793571","callsign": "YBZS2","shipName": "KT.JAYANEGARA 308","shipType": "Tug","toBow": "12","toStern": "29","toStarboard": "6","toPort": "6","positionFixingDevice": "Gps","etaMonth": "0","etaDay": "0","etaHour": "0","etaMinute": "0","draught": "0.0","destination": "TRIAL","dataTerminalReady": "false","transponderClass": "A","eta": "00-00 00:00","etaAfterReceived": "Optional.empty","rawDraught": "0","valid": "true"}

message-type : StandardClassBCSPositionReport :
{"messageType": "StandardClassBCSPositionReport","nmeaMessages": ["!AIVDM,1,1,,B,B5NJ;PP005l4onUIsc@03woUoP06,0*3A"],"metaData": {"source": "SRC","received": "2021-05-12T11:14:54.443Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "367430530","regionalReserved1": "00000000","speedOverGround": "0.0","positionAccurate": "false","latitude": "37.785046","longitude": "-122.267334","courseOverGround": "0.0","trueHeading": "511","second": "47","regionalReserved2": "00","csUnit": "true","display": "false","dsc": "true","band": "true","message22": "true","assigned": "false","raimFlag": "true","communicationState()": dk.tbsalling.aismessages.ais.messages.types.ITDMACommunicationState@69a3d1d,"communicationStateSelectorFlag": "true","transponderClass": "B","rawSpeedOverGround": "0","rawLatitude": "22671028","rawLongitude": "-73360403","rawCourseOverGround": "0",valid": "true"}

message-type : BinaryBroadcastMessage :
{"messageType": "BinaryBroadcastMessage","nmeaMessages": ["!AIVDM,1,1,,B,85MwpKiKf0wLgSt5BlHF<3FMlaSRCjf1?Nq;4TAA7Mj:oOH5bs=8,0*7D"],"metaData": {"source": "SRC","received": "2021-05-12T11:14:54.445Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "366999663","spare": "0","designatedAreaCode": "366","functionalId": "56","binaryData": "0000111111011100101111100011111100000101010010110100011000010110001100000011010110011101110100101001100011100010010011110010101110000001001111011110111001001011000100100100010001010001000111011101110010001010110111011111011000000101101010111011001101001000","applicationSpecificMessage": {"designatedAreaCode": "366","functionalId": "56","binaryData": "0000111111011100101111100011111100000101010010110100011000010110001100000011010110011101110100101001100011100010010011110010101110000001001111011110111001001011000100100100010001010001000111011101110010001010110111011111011000000101101010111011001101001000"},"valid": "true"}

message-type : ClassBCSStaticDataReport :
{"messageType": "ClassBCSStaticDataReport","nmeaMessages": ["!AIVDM,1,1,,A,H5NLOjTUG5CD=1BG46mqhj0P7130,0*78"],"metaData": {"source": "SRC","received": "2021-05-12T12:05:39.725Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "367468490","toStarboard": "3","transponderClass": "B","mothershipMmsi": "8417347","toStarboard": "3","vendorId": "WESTMAR","callsign": "WDF5902","shipName": "null","shipType": "PleasureCraft","toBow": "4","toPort": "1","toStern": "7","partNumber": "1","valid": "true"}

message-type : LongRangeBroadcastMessage :
{"messageType": "LongRangeBroadcastMessage","nmeaMessages": ["!AIVDM,1,1,,B,KC5E2b@U19PFdLbMuc5=ROv62<7m,0*16"],"metaData": {"source": "SRC","received": "2021-05-12T12:14:14.268Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "1","sourceMmsi": "206914217",,"courseOverGround": "167.0","speedOverGround": "57.0","transponderClass": "A","rawCourseOverGround": "167","rawSpeedOverGround": "57","latitude": "4.84","longitude": "137.02333","rawLatitude": "2904","rawLongitude": "82214","raim": "false","spare": "1","positionLatency": "0","positionAccuracy": "false","navigationalStatus": "NotUnderCommand","valid": "true"}

message-type : ExtendedClassBEquipmentPositionReport :
{"messageType": "ExtendedClassBEquipmentPositionReport","nmeaMessages": ["!AIVDM,1,1,,B,C69DqeP0Ar8;JH3R6<4O7wWPl@:62L>jcaQgh0000000?104222P,0*32"],"metaData": {"source": "SRC","received": "2021-05-12T12:16:06.276Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "412432822","toStarboard": "4","shipName": "ZHECANGYU4078","shipType": "Fishing","toBow": "16","toPort": "4","toStern": "8","assigned": "false","second": "15","courseOverGround": "49.7","speedOverGround": "7.1","transponderClass": "B","regionalReserved1": "00000000","regionalReserved2": "0000","rawCourseOverGround": "497","rawSpeedOverGround": "35","regionalReserved3": "00000000","dataTerminalReady": "true","latitude": "24.695787","longitude": "118.99442","positionAccurate": "true","positionFixingDevice": "Gps","raimFlag": "false","rawLatitude": "14817473","rawLongitude": "71396656","valid": "true"}

message-type : ChannelManagement :
{"messageType": "ChannelManagement","nmeaMessages": ["!AIVDM,1,1,,B,F030p:j2N2P5aJR0r;6f3rj10000,0*11"],"metaData": {"source": "SRC","received": "2021-05-12T12:19:42.318Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "3160107","band": "false","channel1B": "2088","addressed": "false","destinationMmsi1": "","destinationMmsi2": "","bandA": "false","channel1A": "2087","northEastLatitude": "3300.0","northEastLongitude": "-7710.0","southWestLatitude": "3210.0","southWestLongitude": "-8020.0","transmitReceiveMode": "TxABRxAB","zoneSize": "2","power": "false","valid": "true"}

message-type : PositionReportClassAAssignedSchedule :
{"messageType": "PositionReportClassAAssignedSchedule","nmeaMessages": ["!AIVDM,1,1,,A,24RjBV0028o:pnNEBeU<pJF>0PT@,0*3F"],"metaData": {"source": "SRC","received": "2021-05-12T12:19:42.318Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "304911000","navigationStatus": "UnderwayUsingEngine","rateOfTurn": "0","speedOverGround": "13.6","positionAccuracy": "true","latitude": "37.21113","longitude": "-123.45053","courseOverGround": "329.7","trueHeading": "331","second": "7","specialManeuverIndicator": "NotAvailable","raimFlag": "false","communicationState": {"syncState": "UTCIndirect","slotTimeout": "0","numberOfReceivedStations": "null","slotNumber": "null","utcHour": "null","utcMinute": "null","slotOffset": "2320"},"transponderClass": "A","rawSpeedOverGround": "136","rawLatitude": "22326676","rawLongitude": "-74070321","rawCourseOverGround": "3297","valid": "true"}

message-type : ClassBCSStaticDataReport :
{"messageType": "ClassBCSStaticDataReport","nmeaMessages": ["!AIVDM,1,1,,A,H<4OM11=04<Dts3@00000000000,2*63"],"metaData": {"source": "SRC","received": "2021-05-14T03:54:59.780Z","decoderVersion": "3.2.1","category": "AIS"},"repeatIndicator": "0","sourceMmsi": "810016004","toStarboard": "null","transponderClass": "B","mothershipMmsi": "","toStarboard": "null","vendorId": "null","callsign": "null","shipName": "SPACEON04","shipType": "null","toBow": "null","toPort": "null","toStern": "null","partNumber": "0","valid": "true"}


message-type : StandardSARAircraftPositionReport :
{"messageType": "StandardSARAircraftPositionReport","nmeaMessages": "[]","metaData": {"source": "","received": "","decoderVersion": "","category": ""},"repeatIndicator": "","sourceMmsi": "","assigned": "","radioStatus": "","speedOverGround": "","positionAccuracy": "","latitude": "","longitude": "","courseOverGround": "","second": "","raimFlag": "","altitude": "","transponderClass": "","rawSpeedOverGround": "","rawLatitude": "","rawLongitude": "","rawCourseOverGround": "","valid": ""}