MP Prefix and UN/LOCODE Structure
Northern Mariana Islands port codes use the MP country or territory prefix followed by a three-character location identifier, such as MPSPI, MPROT or MPTIQ.
Seaports in Northern Mariana Islands: Port Codes, Throughput & Regional Guide (2026)
Northern Mariana Islands has 5 ports and terminals indexed in the Ecer Freight database and serves as a small, island-based maritime gateway in the western Pacific.
Review indexed port codes, local port roles, available trade lanes and data notes for Northern Mariana Islands.
Northern Mariana Islands Port Overview
Northern Mariana Islands has a compact maritime network focused on island supply, passenger activity and regional cargo connectivity. Indexed coverage and international league-table rankings are separate measures.
5
Northern Mariana Islands ports & terminals indexed in our database
Ecer Freight database · Nov 2026
—
Official cargo tonnage, 2025; no consolidated public figure confirmed
CNMI official statistics · 2025
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Container throughput in TEU, 2025; no consolidated public figure confirmed
CNMI port sources · 2025
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Commercial berth count, 2025; public figure requires port-level confirmation
CNMI port sources · 2025
How many seaports does Northern Mariana Islands have?
Northern Mariana Islands has 5 seaports and terminals indexed by Ecer Freight in its port database as of Nov 2026.
Which port is the main indexed gateway?
Saipan Island, UN/LOCODE MPSPI, is the main port entry in the indexed sample and is generally the leading commercial gateway for Northern Mariana Islands.
Which areas handle the main cargo activity?
Saipan Island and Saipan form the principal indexed cargo cluster, while Rota Island and Tinian support separate island-level supply roles under codes MPROT, MPTIQ and MPTNI.
Top Ports in Northern Mariana Islands
The table lists the five Northern Mariana Islands port and terminal records indexed by Ecer Freight, ordered by the supplied business-activity sequence. No reliable public 2025 league-table throughput series was confirmed for these individual records.
Indexed port records and available 2025 throughput indicators
| World rank | Port | UN-LOCODE | 2025 throughput (M TEU) | YoY change | Region |
|---|---|---|---|---|---|
| — | Saipan | MPSPN | — | — | Saipan |
| — | Saipan Island | MPSPI | — | — | Saipan |
| — | Rota Island | MPROT | — | — | Rota |
| — | Tinian | MPTIQ | — | — | Tinian |
| — | Tinian | MPTNI | — | — | Tinian |
Port Regions and Island Clusters
Saipan Cluster
Saipan is the largest indexed island cluster and the primary point for general cargo, consumer supplies and regional maritime services.
Saipan port records
| Port | UN-LOCODE | City / Province | Main cargo role |
|---|---|---|---|
| Saipan | MPSPN | Saipan / — | Island supply and general cargo |
| Saipan Island | MPSPI | Northern Mariana Islands / — | Main indexed commercial gateway |
Rota Island
Rota Island represents a separate island-level port record serving local community and supply movements.
Rota port record
| Port | UN-LOCODE | City / Province | Main cargo role |
|---|---|---|---|
| Rota Island | MPROT | Northern Mariana Islands / — | Local island supply and general cargo |
Tinian Island
Tinian has two indexed records in the database, reflecting separate port naming and location records rather than a consolidated throughput ranking.
Tinian port records
Northern Mariana Islands Port Codes
City-Level and Terminal-Level Records
Similar names may represent different location records. Saipan and Saipan Island, as well as the two Tinian entries, should be checked against the exact code before booking or preparing shipping documents.
How to Verify a Port Code
Compare the code with the UNECE UN/LOCODE reference and then confirm the indexed record through the Ecer Freight port directory.
Shipping from Northern Mariana Islands: Main Trade Lanes
Transit times are indicative only. Actual schedules depend on transshipment, carrier rotation, equipment availability, port operations and seasonal weather.
Northern Mariana Islands–Guam
A short western Pacific lane commonly used for regional replenishment, onward consolidation and inter-island logistics.
Northern Mariana Islands–Japan
Japan-linked services can support consumer goods, project cargo and regional supply chains through direct or transshipment routings.
Northern Mariana Islands–East Asia
Connections with major East Asian hubs may be used for containerized imports and onward transshipment across the Pacific.
Northern Mariana Islands–United States
United States-bound cargo generally requires a Pacific routing and may involve transshipment, inland delivery coordination and equipment confirmation.
Data Methodology and Sources
- Ecer Freight Ports Database — first-party indexed coverage of 5 Northern Mariana Islands port and terminal records, snapshot Nov 2026.
- UNECE — UN/LOCODE structure and location-code verification reference.
- National Geospatial-Intelligence Agency — maritime location and navigational reference context.
- CNMI official statistics and port authorities — cargo, berth and operational indicators where an official public 2025 figure is available.
- Carrier schedules and freight-market references — indicative routing and transit-time context, subject to confirmation at booking.
Northern Mariana Islands Port FAQ
How many seaports does Northern Mariana Islands have?
Northern Mariana Islands has 5 seaports and terminals indexed by Ecer Freight as of Nov 2026.
What is the main port in Northern Mariana Islands?
Saipan Island, code MPSPI, is the main indexed port record and is generally treated as the leading commercial gateway in the available sample.
What port codes are used in Northern Mariana Islands?
The indexed codes are MPSPN, MPSPI, MPROT, MPTIQ and MPTNI. Each begins with the MP prefix.
Which areas contain the main ports of Northern Mariana Islands?
The indexed records are grouped across Saipan, Rota Island and Tinian, with the Saipan cluster appearing first in the supplied activity sequence.
Are 2025 port throughput figures available?
A consolidated, reliable public 2025 TEU series was not confirmed for the individual indexed records. Port-level figures should be verified with the relevant authority or carrier.
How current is the Northern Mariana Islands port data?
The Ecer Freight coverage snapshot is dated Nov 2026, while the latest complete statistical reference year used where available is 2025. Operational details remain subject to change.
How can shippers request a freight quote from Northern Mariana Islands?
Shippers can request current FCL or LCL pricing through the relevant freight quote pages. Final rates depend on origin record, destination, cargo details, equipment and sailing availability.
Editorial note: Port coverage is based on Ecer Freight's first-party database and the Nov 2026 data snapshot. Public authority, maritime reference and carrier information is used for context where available. Port records, schedules, capacity and transit times are reviewed and updated as new information becomes available.
Ecer Freight · Seaports in Northern Mariana Islands: Port Codes, Throughput & Regional Guide (2026) · Data reviewed quarterly · Port Codes · Ports by Country · Contact