Topography And Marine Survey

Topography And Marine Survey


Vertical accuracy of the system (on land) is 10mm, but with wave motion etc., the realistic vertical accuracy is 60mm. The system is independent of tidal fluctuations, waves, wind and currents. Pre-determined courses can be set and positioning to accuracy of 50mm can be achieved. Data is collected and downloaded for processing on our drafting module for plan & Cross section.

GIICO has been involved in a wide range of surveying and Geomatics projects around the country and the surrounding areas. With our experience, we lead professionals & responsible crews, who all strive to provide the best service available at a reasonable price to an extensive list of clients and on a wide range of projects.

GII Surveyors are experienced in mapping of sea-beds, river beds, lake beds, etc. We use purpose built boat, which is used for our hydrographic work. The boat is suitable in open moderate waters. The system utilizes DGPS (Differential Global Position Satellite) surveying equipment with RTK (Real Time Kinematic) facility allowing us to work within 30km of a base station. The system relies on multi frequency echo sounders heave compensator electronics to measure the roll and pitch of the vessel. These signals are downloaded to an onboard computer every second.

GIICO provides expert services in the following fields:

  • Topographic & Cadastral Survey
  • Construction Survey
  • Under ground Utility survey
  • As-build Survey
  • Road Survey
  • Volumetric Survey
  • Geophysical Survey
  • Bathymetric Survey
  • Mobile Mapping Survey service

Global Positioning System (GPS) technology allows the collection, coordination and confirmation of features on the ground for establishment of ground control or subsequent integration with geographic information system (GIS). Our crews have collected hundreds of points using GPS and have extensive experience using GPS to capture ground features for integration with CAD and GIS and to establish precise survey control for Photogrammetric & Remote sensing programs.

Our range of services also includes:

  • Querying and ordering all forms of satellite data
  • Image ortho-rectification
  • Map production
  • Information extraction ( eg. Road networks , land cover)
  • 3-D rendering and visualization
  • Output to numerous file types
  • Hard copy output
  • Establishment of ( Geodetic ) survey networks
  • Preparation & updating of town maps in scales : 1:500, 1:1000, 1: 2000, 1:5000, 1:10000
  • Surveying services during construction works of public private buildings as well as roads and industrial plants
  • Locating underground devices ( pipes, cables etc….)
  • Other surveying and cartographic works
  • Digital Terrain Modeling
  • Earthworks

GII Performs field collection for attribute data related to map features such as street names, land mark names and types ( schools , hotels, hospitals, shops, building s heights …….) these attributes are used to build database that are needed for the production of new GIS read y maps from Satellite / Ariel images or for the update of existing CAD vector maps.

GII provides comprehensive geophysical services across the country and the Middle East to solve a large variety of problems for a diverse group of clients.

Our Geophysical team remains dedicated to providing quality geophysics for all clients on all projects


To be able to meet the requirements of our clients  we have ongoing research and development programmes covering every aspect of our work.


GIICO provides services of high quality, has a proven track record and remains committed to the success of each assignment it undertakes.


As employees cooperate with each other and leverage each others strengths, there is more productivity in GIICO.


Please download equipment tools.