UN/LOCODE TR MER identifies Mersin, 33, Türkiye. UNECE classifies it as seaport. Below: the classifiers, the location reference, the CBP entry code where CBP publishes one, and the Airlift ocean freight lanes serving Türkiye.
UN/LOCODETR MER
Place nameMersin
CountryTürkiye (TR)
Subdivision33
Function classifiersSeaportRail terminalRoad terminalcode list string 123-----
Carriers print the port of loading and port of discharge on bookings and bills of lading as UN/LOCODEs, so TRMER is what you will normally see against Mersin on carrier paperwork and in schedule and tracking feeds. The first two characters, TR, are the ISO 3166-1 country code for Türkiye; the remaining three identify the place within it.
A UN/LOCODE names a place, not a berth. Where a port city runs several container terminals, UNECE often assigns the terminals their own codes alongside the city code — which is why a booking can legitimately show a code you did not expect. Take the code from the carrier booking rather than picking the one that reads most like the port name.
Schedule D codes are a US-only system, so Mersin does not have one. If Mersin is your origin, the Schedule D code that matters is the one for your US port of entry — every US port page in this tool shows it where CBP publishes it.
The UN/LOCODE for Mersin, 33, Türkiye is TRMER, printed as TR MER. The first two characters (TR) are the ISO country code and the last three identify the location. Source: UNECE UN/LOCODE Code List, edition 2024-2.
Location data: UNECE UN/LOCODE Code List, edition 2024-2 — public data published by the United Nations Economic Commission for Europe (UN/CEFACT). UN/LOCODE code list.
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