Abstract:
This study is aimed to map out the subsurface of the estuary area near Pulau Duyong
Besar using 'OHMEX Sonarlite Echo sounder'. The project is done by using the
bathymetry concept and technique which is part of this study. The main objective of the
study is determining the bottom topography of Pulau Duyong Besar and also to study and
learn the technique of hydrograph survey. The survey was done on the 16111 February
2007 at around 3.30pm by using a small vessel During the survey, transect of the survey
area was made by using the HydroPro software and almost cover all the survey area
perfectly. The vessel managed to follow the transect and all the survey area was perfectly
sounded using the Sonarlite. An area of approximately 922, 000m2 was covered. All the
data then recorded in the laptop to processed later by using the SUFFER version 8.0
software to produce the subsurface map of the survey site. These surveys also point out
that the technology use by this Echo sounder which use underwater laser beam is
powerful enough to detect the seabed and enumerate the depth of that place. This enables
faster and more accurate ground "trotting" and mapping become easy.
