Port of Portsmouth

The approach to Portsmouth is supported by 5 navigation aids within 50 nautical miles. The nearest is Portsmouth Harbor Lighthouse at 0.4 NM to the ESE. Other aids include Portsmouth Channel Range Front (0.7 NM NE), Portsmouth Channel Range Rear (0.7 NM NE), Stage Island Monument (1.3 NM SE), Whaleback Ledge (1.3 NM SE). Mariners should consult the relevant chart and List of Lights for full approach details.

The Port of Portsmouth is situated on the North Atlantic Ocean in US. The area falls within the temperate maritime climate zone, which can influence port operations and seasonal shipping patterns.

You can track vessels near Portsmouth (USPTM) in real time using MarineRadar. The platform displays live AIS positions of nearby ships, including vessel name, type, flag, speed, and course.

The Port of Portsmouth is a port in US. Its UN/LOCODE is USPTM — the five-character code the UNECE assigns to trade and transport locations, and the identifier used on shipping documents and in port calls.

The first two characters, US, are the ISO country code for US. The remaining three identify the location within that country. The code is issued by the United Nations Economic Commission for Europe and is the international standard for naming ports in trade and transport systems.

The Port of Portsmouth operates in the UTC-5 time zone. Operating hours, VTS schedules, and pilot availability vary — vessel agents should confirm with the port authority in advance, especially for night arrivals or weekend operations.