Port of Stockholm, “the meeting place of Baltic Sea” has extensively renewed and developed its vast port areas. Renovating important hubs to support the busy freight and passenger transport, Port of Stockholm also invested in developing one of its oldest port areas: The historical port of Värtahamnen.
Värtahamnen is part of Stockholm’s main port, and hosts one of the most historical infrastructures in the port area. The earliest structures are built and renovated in the late 1800s and early 1900s to create a port for importing bulk goods such as coal, and as the ferry traffic began in the 1960s, new renovations were performed in the 1980s and later again in the 2010s to meet the increased needs.
The many phases of the Värtahamnen port development and continuous construction measurements can be challenging to the structures and to the monitoring the progress of each project. Underwater structures and seabed conditions, invisible to the human eye, needed novel technology to be clarified: with multibeam sonar inspections, the Port of Stockholm was delivered a clear and precise representation of underwater conditions.
3D data easily online for smart utilization
To ensure a successful project, the Port of Stockholm needed structural inspections to deliver detailed information about the condition of both the seabed and underwater structures. The pier structures were surveyed with multibeam sonar scanning technology that provides the most detailed 3D data and a complete overview of the port area more efficiently than traditional survey methods. In addition to written survey report with expert interpretations, all 3D survey data was delivered in our unique Gisgro; an online-service for easy data management without additional software installations.
With multibeam 3D inspections and the detailed point cloud data processed and interpreted by our licensed marine inspectors, the Port of Stockholm received a full view into both the bottom and the structures at the same time whereas traditionally inspecting these two different types would have required separate inspections. Therefore, the inspections caused minimal to no interruptions to the port operations.
– The material is easy to use and maintain. We received an exact overview compared to using only divers and / or ROV. The overall view simplifies the planning and implementation of targeted maintenance actions. In Gisgro, we can compare the datasets so we can quickly and easily see if unexpected changes have occurred, says Mats Ekman, Project Manager, Port of Stockholm.
We also received interesting new information about construction projects and recognizable damage through 3D inspection – It is good to see the damage at an early stage allowing us to react proactively. A detailed overview has been very valuable to us. Previously, we've made bottom scans with inferior resolution and studied the quay walls with divers. With the new scanning technology, we were able to send divers to predefined destinations identified by VRT inspections.