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The following links lead to the Critical Depths information and Estuary Tidal Reductions published by the PLA Hydrographic Service. Critical Depths Estuary Tidal Reductions

The following link leads to the Depths on Tiers information published by the PLA Hydrographic Service. Depths on Tiers To download the files you need

The following link leads to the Published Survey information published by the PLA Hydrographic Service. Published Surveys To download the files you need

The following link leads to the Periodic Survey information published by the PLA Hydrographic Service. Periodic Surveys (Adobe file)

Our Marine River Inspectors skipper our launches on the tidal Thames. In the Upper District they are split into two crews, one covering Teddington to Putney and the other Putney to Crossness. Teddington to Putney The two skippers of our upriver launches are:

The Port of London Authority’s Vessel Licensing Team inspects and licences nearly 800 commercially operated vessels a year, fulfilling the PLA’s statutory licensing duty. Our Marine Surveyors are also able to provide services for third parties on commercial vessels which include: New Build Consultancy Services Inland Waterways Certification Insurance Surveys Surveys can be completed anywhe

Click here to view the full size Pilot Card (176kb) Also see The Boarding and Landing of Pilots by Pilot Boat Code of Practice /

Click on the links below to view the relevant Statement of PLA Policy Quality Policy Environmental Policy Health and Safety Policy Drug and Alcohol Policy

Chart Datum Depths in the Thames throughout the Port of London are measured to chart datum, which is defined as a level so low that the tide will not frequently fall below it. This

About Tides The gravitational forces of the moon and sun create areas of high and low water on the earth's surface. As the earth rotates the location of high and low tide changes. The moon has the greatest effect on the water compared with the sun due to its proximity to the earth and the configuration of the sun and moon, whether aligned or offset, has an effect on the tidal range. Spring T