ROUTE FILES · FOR OFFICERS WHO PLAN THE PASSAGE
JRC ECDIS route files
NaviBoss reads and writes 4 JRC route formats (JRC ECDIS .csv, JRC ECDIS (RTM) .rtm, JRC ECDIS (RTN) .rtn and JRC ECDIS (RTA) .rta) among 35 route formats, both directions. Import a route from any other ECDIS or planner free, then export it for JRC (Japan Radio Co.) ECDIS.
JRC formats NaviBoss reads and writes
| Format | File | What it is | How sure we are |
|---|---|---|---|
| JRC ECDIS | .csv | Route sheet CSV. JRC's 2025 manual lists RTZ | Follows the maker's manual |
| JRC ECDIS (RTM) | .rtm | Names and positions only. JRC's 2025 manual lists RTZ | Not checked yet |
| JRC ECDIS (RTN) | .rtn | Binary — names and positions only | Not checked yet |
| JRC ECDIS (RTA) | .rta | Binary — names and positions only | Not checked yet |
How to convert a route
- Open the planner and drop in the route file you have (any of 35 formats), or plan the route there.
- Check it on the chart: every waypoint, leg, distance and turn radius.
- Press Export and pick JRC ECDIS, JRC ECDIS (RTM), JRC ECDIS (RTN) or JRC ECDIS (RTA).
- Copy the file to a USB stick and load it with your ECDIS's route import function, as its manual describes.
Questions officers ask
How do I convert a route for a JRC ECDIS?
Open the route in NaviBoss (import any of 35 route formats, or plan it there), choose Export, pick the JRC format (JRC ECDIS .csv, JRC ECDIS (RTM) .rtm, JRC ECDIS (RTN) .rtn or JRC ECDIS (RTA) .rta) and save it to a USB stick. Then load it with your ECDIS's own route import function, as its manual describes.
Can I convert a route from another ECDIS make to JRC?
Yes. Import the route file from the other system (for example Furuno, Transas, Kongsberg or an RTZ file) and export it as JRC. Importing is free; exporting needs a plan after the 7-day trial.
Does a JRC ECDIS take RTZ?
RTZ (IEC 61174) is the standard route exchange file and many current ECDIS models import it. Whether yours does depends on the model and software version: check its manual. NaviBoss exports RTZ as well as the JRC formats.
How sure is NaviBoss that the JRC files load?
Each format says it plainly: JRC ECDIS: follows the maker's manual, JRC ECDIS (RTM): not checked yet, JRC ECDIS (RTN): not checked yet and JRC ECDIS (RTA): not checked yet. If you have a file your JRC unit wrote, send it and we check the format against it.
Other makers and formats
Convert your route now
Drop in the file you have and export the one your ECDIS takes. Import is free with an account; the first 7 days include export.
Open the Export tool →About our guides
NaviBoss guides are written and checked by maritime industry experts, masters and deck officers. Each one is built from the same data the planner uses, dated, and rebuilt when that data changes. Spotted something wrong? Tell us on the feedback board.
A planning aid, not for navigation. Always check an imported route on the ECDIS against the official charts before you use it.