10 HydrograpHic Survey
Sonar surveys play key role in
South Australia port development
wo GeoSwath wide swath (delivered in 2000 and upgraded in 2004) allowed
Tom Hiller reports
bathymetric sonars are being used unprecedented rapid survey coverage in shallow
on how wide swath
for regular hydrographic port surveys waters, resulting in significant productivity gains
bathymetric sonars are
T
around the South Australian coast, and achieving total insonification over large areas,
being used for regular
providing bathymetry and side scan data for with sounding data exceeding IHO S44 special
hydrographic port
use in the development and maintenance of this order survey standard for depth accuracy.
surveys.
important national infrastructure. The two GeoSwath systems are mounted on
Recent projects include the pre-, progress-, HydroSurvey’s NoosaCat twin-hulled survey
Tom Hiller berichtet
and post-dredge monitoring of the major shipping launches. The ‘Pathfinder’ is an 11 metre
über bathimetrische
channels to Port Adelaide and Port Giles which NoosaCat 3900-Series with a 250kHz GeoSwath
Sonare für bereite
were deepened to accommodate panamax head deployed on a central ‘periscope’-mount
Schneisen, die für vessels. between the hulls. The Felix is a trailerable 5
hydrographische HydroSurvey Australia is the hydrographic metre NoosaCat 1800-Series with a mounting
Hafenuntersuchungen
survey business arm of Flinders Ports, with plate for a customised 250kHz GeoSwath
eingesetzt werden.
the core task of performing recurrent surveys transducer arm fixed to the port side gunwale.
of navigational channels and berths for design In addition to their core survey functions,
Tom Hiller informa
and maintenance purposes. As well as using HydroSurvey Australia undertakes contract
sobre la utilización de
the GeoSwath data for planning future port hydrographic and bathymetric surveys for various
los sonares de
developments this survey programme is an projects including: design and construction of
batimetría de barrido
integral part of Flinders Ports’ risk mitigation commercial ports and marinas; locating shoals
ancho para realizar strategy. HydroSurvey now carries out regular and reefs; and to measure coastal sand migration.
exploraciones
navigational hydrographic work at all the main The GeoSawth Sonar’s shallow water capabilities
hidrográficas
shipping ports and minor boat havens in South also make it ideal for river and lake surveys; in
portuarias rutinarias.
Australia, over 100km of channels and 50 berths. 2001 HydroSurvey were commissioned to survey
As a core part of their expanding range of Lake Burragorang (behind Warragamba Dam),
survey equipment HydroSurvey has taken delivery 60km west of Sydney.
of a second GeoSwath interferometric sonar With a storage volume of 2 million megalitres
from GeoAcoustics Ltd (Great Yarmouth, UK), a this is one of the largest domestic water supply
Kongsberg Maritime Company. The wide swath dams in the world, supplying approximately
width demonstrated by their first GeoSwath 80 per cent of the water delivered to Sydney.
Fig 1. The
HydroSurvey
Australia team
on the Pathfinder
after the fitting
of the periscope
mount.
L-R: Adrian
Drabsch, Neil
Hewitt, Peter
Hanson, Carl
Kavina, Perry
Woodward.
Image: Peter Woolfall,
HydroSurvey Australia
www.engineerlive.com
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