A TR (Travel Report) is a short travel report from a ship, usually to a coast radio station, but also to any other radio station. It contains at least the ship’s name and call sign, the ship’s position and the port of departure and arrival.
In the following example the ship KATJANA/DGAI (Reederei Peter Döhle Schiffahrts KG, 1976) sends a TR to Norddeich Radio / DAN. The Katjana is leaving the port of Hamburg and has just passed Schulau. The next port of destination is Bremen. The communication between DGAI and DAN is as follows:
In the first step, the coast station (DAN) is called by the ship (DGAI) on the emergency and calling frequency of 500 kHz. The type of communication required is specified in the call (TR). The abbreviations gm stand for “good morning” and hw for “how”. The “how” request is always sent when you want to leave the further procedure to the called station. Finally, there is always a k for “come”, which is used to transfer to the communication partner.
Norddeich Radion / DAN now answers by sending the callsign of Katjana (DGAI) twice and its own callsign DAN up to twice. We already know gm and k. Since no frequencies from Norddeich Radio are specified here, this is linked to the request to send the relatively short TR message directly on 500 kHz.
Here Katjana sends the TR message. Translated, this message means the following:
Katjana / DGAI from Hamburg bound Bremen Schulau at 13:15 gmt happened = NIL thank you k
from – from
bound – intended for
gmt – Greenwich Mean Time
NIL – nothing more for you
Here Norddeich confirms the complete receipt of the TR message (QSL), also announces that there are no further documents for transmission and says goodbye with tusu, which means “thank you see you”.
This completely describes the communication for the transmission of a TR message. Of course, there are many variants of this in practice. If there is a lot of traffic on 500 kHz, you will usually be asked to change frequency, for example. For Norddeich Radio this means change to the reception frequency 444 kHz (DAN) and the transmission frequency 425 kHz (ship).