You face any number of challenges in marine surveying. Tidal height variations, system integration issues, distance from land and a survey area that you can't always see. Your ability to rapidly carry out a marine survey can be compromised by anything from equipment integration problems to working at night or in foggy conditions. Whether it's surveying a waterway for charting purposes or an environmental survey, a proven Trimble system can provide you with the tools to position you for success.

Trimble offers a range of high-precision centimeter level (RTK) and sub-meter (DGPS) positioning solutions which together with other marine sensors can be integrated with the HYDROpro™ Navigation and the HYDROpro™ Terramodel software to create application specific marine systems.

• RTK - The RTK Advantage provides centimeter horizontal and vertical positioning accuracies. Using RTK requires a source of satellite corrections such as an RTK base station. A Trimble RTK system can replace a radio tide gauge for real-time tide and heave measurement, and a survey grade Gyro compass for precision heading. Trimble RTK positioning sensors include:
  • Trimble® SPS461 Modular GPS Heading Receiver
  • Trimble SPS852 Modular GNSS Receiver
  • Trimble SPS552H Add On GPS Receiver

• DGPS - Provides sub meter horizontal position accuracies. DGPS requires a source of satellite corrections such as IALA Beacon, EGNOS, WAAS, proprietary SBAS or DGPS Base station transmissions. A Trimble DGPS receiver can be combined with HYDROpro Navigation and many industry standard echosounders and magnetometers for surveying systems. Sub meter positioning sensors from Trimble include:
  • Trimble® SPS361 DGPS/Beacon Heading Receiver
  • Trimble SPS852 Modular GNSS Receiver
  • Trimble SPS552H Add On GPS Receiver

Trimble marine surveying solutions address the following applications:

Hydrographic

Charting, or mapping, waterways to a high accuracy can be a difficult task. Your ability to guide the survey boat and accurately record the position of the survey sensors and correctly register the data collected can be compromised just as much by currents and tides as it can by poor system integration. Trimble systems integrate with many industry standard hydrographic sensors ensuring survey accuracies are maintained. The data can be collected, quality controlled and graphical plots generated.

Learn how others are using marine surveying solutions from Trimble:

• Clearing the Beautiful Blue Danube
• Port of Sines
• Port and Coastal Hydrography

Environmental Surveys

The effects of urbanization on the state of waterways or the effects of marine construction projects, such as dredging, on water quality require regular surveys. Sensors such as dissolved oxygen and pH digitally send readings to a computer where all data is aligned with position records. Helmsman's guidance is provided so that a regular survey pattern is covered while in the survey vessel.