Nusail Engineering Consultancy was contracted by Atkins to provide Hydrographic Survey, Geophysical (Sub-Bottom Profiling) Survey, and Ocean Current Investigation Survey services for the Khasab Port area Redevelopment site Investigation study in Khasab, Sultanate of Oman.

Scope of the Survey

• Bathymetric Survey and Side Scan Sonar Survey
• Geophysical (Seismic) Survey
• Ocean Current Measurement Survey

Equipment List

The following data collection systems were used:

System	Purpose
Sokkia RTK GPS Receiver-BASE	Survey Navigation Positioning and Benchmark Positioning
Sokkia RTK GPS Receiver-Rover	Survey Navigation Positioning and Benchmark Positioning
ADL Vantage Pro - Pacific Crest Hemisphere DGPS	Wireless Digital Data Link
Survey Depth Collection Sonar	Collects Tidal Data for Correcting Depths in Post Processing
Current Profiler	RDI Teledyne ADCP Current Meter
Odum Hydrotrac Echosounder	Depth Measurement
Valeport Tide Gauge	Tide Measurement
Edge Tech 4125-P	Side Scan Survey Acquisition
GeoPulse GeoAcoustics Pinger	Seismic Survey Data Acquisition

Survey Procedure

A pre-survey investigation was conducted to ensure a safe working area and confirm that the client’s survey objectives could be met within the pre-defined survey areas. During the survey, a Valeport Tide Gauge was installed for tide correction. All data from each of the peripherals were logged into software.

The bathymetric survey aimed to determine the sea bed profile along the proposed Khasab port area redevelopment site and the optional area of the Khor Qada on the seaward boundary of the plot. The results of the survey were used to understand the seabed profile along both areas. Nusail Engineering Consultancy installed an automatic water level recorder during the bathymetric survey to monitor the state of the sea. The depth data collected during the survey was adjusted to the local vertical level using the water level variations recorded by the installed recorder.