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There
are marine radiobeacon DGPS services in over 39 countries
throughout the world including the majority of North
West European States. With advances in technology,
the signals from radionavigation systems have progressively
transcended national boundaries to provide long-range
transmissions from a network of satellite and terrestrial
stations.
This has significant benefits for the safety of navigation since it enables a
consistent means of navigation throughout all phases of the voyage, during the
day or night and in conditions of reduced visibility. Such systems will also
help with improved voyage planning to reduce ship operators' costs. A high level
of availability of the right mix of aids to navigation systems also plays some
role in determining which ships will visit our ports and in demonstrating that
effective measures have been taken to minimise the risk of pollution from ships. |