Release Information

The new ports and routing changes for each recent release of the distance tables.

Tables updated to Admiralty Notices to Mariners 2017 Week 38

Notable areas of Change

San Francisco Bay

Large change to take into account north and south facing TSS in the entrance to San Francisco Bay area. Vessels traverse the California ECA for longer but reduce total voyage distance by 40nm.

Georgetown and Linden, Guyana

Approaches to the port altered to provide lateral distances from dangerous subsea obstructions.

Gulf of Finland Eastern Part

Changes to the approaches of Russian ports in the area to better comply with routing criteria and safety of navigation.

Port approaches reviewed

Minor changes have been made to approaches to the following ports, prompted by review or due to the release of updated charts or other information in Notices to Mariners; distances to/from these ports may have changed.

  • Lewisporte. Canada
  • Ulsan, Korea
  • Darwin, Australia
  • Mayanmar, Yangoon River
  • River Mersey, Uk
  • Tiazhou TSS
  • Balboa Pacific Entrance to the Panama Canal
  • Quanzhou, China
  • Calcutta, India
  • San Diego, USA
  • Surabaya, Indonesia

Other sea areas reviewed

Minor changes have been made to the route network in the following sea areas, either prompted by review or due to the release of updated charts or other information in Notices to Mariners; distances for routes transiting these areas may have changed by a small amount.
Sulu Sea, Tubbataha Reefs Natural Park Particularly Sensitive Sea Area
Japan, off the western coast of Izu o Shima Island

  • Taiwan Strait, China
  • China, Bohai Peng Lai FPSO
  • Hjulstafjarden, Sweden
  • Davey Gas Field, North Sea
  • Rough Close Gas field, North Sea
  • Hyde Gas field, North Sea
  • Coral sea

None added in this release

None added in this release

Port Name Country Port Code UNCTAD Position
Offshore Delaware No.4 (TA)
United States US1265 38° 30.000' N, 72° 30.000' W
Offshore Hodeidah No1 (TA)
Yemen YE0038 15° 1.000' N, 42° 5.850' E
Offshore Maputo No. 5 (TA)
Mozambique MZ0048 26° 0.000' S, 33° 33.000' E