The International Hydrographic Organization has issued a set of performance requirements
for hydrographic surveying, the so-called S-44 edition 4. It is a quite complex
task for users to configure and qualify a survey system against these sets of rules.
It is also a considerable and expensive task to evaluate the performance of a survey
system and to establish the operational limitations of the system.
We offer tested survey packages
To solve these problems we offer different complete survey system packages, for
which the performance relative to the S-44 regulations have been analysed and tested.
For the user, this means a considerable cost- and risk reduction. The concept was
presented to the IHB in Monaco during Industry Days in June 2002.
The components of a seabed mapping solution
The components of a seabed mapping solution is illustrated above. Precise vessel
position, heading, attitude (roll, pitch, heave), and the sound velocity profile
for the water column are fed to a multibeam echo sounder, which is the primary mapping
instrument. The digital data which is produced by the multibeam echo sounder needs
verification, elimination of spurious noise and tidal corrections before being approved
by the hydrographer and made available for cartographic processing to paper products
and/or electronic chart products. A single beam echo sounder is an option.