Port & Dredging Support
Port and dredging support surveys are an essential tool for the safety of shipping, port asset management, tidal modelling, water/sediment quality and resource consents. The surveys may consist of Single Beam Echo Sounder (SBES) surveys, Multibeam Echo Sounder Surveys (MBES), sediment sampling, tide gauge monitoring and analysis, ADCP surveys for current monitoring, pre and post dredging surveys, dredge monitoring surveys, dredge volume calculations and Mobile Laser Scanning (MLS) of wharves and port structures. The vessels used range in size from jetski's to purpose built survey vessels 5-7m in length fitted with state of the art positioning, motion sensors and portable survey computers.
Tauranga Harbour - Case Study
Client: Port of Tauranga I Duration: Ongoing
Port of Tauranga operations extend beyond Tauranga to Metroport in Auckland, an alliance with North Port Corporation at Marsden Point, Metroport in Rolleston Christchurch and a 50% shareholding in Primeport Timaru.
The Port of Tauranga undertakes regular maintenance dredging to ensure safe navigation and required Under Keel Clearance. DML undertakes pre and post dredge surveys on behalf of POTL to derive accurate baseline datasets. The data quality and level of coverage enables the accurate calculation of volumes which provides confidence to the Port Operations team in terms of assessing UKC. Other benefits include the on-going detection of targets/objects on the sea floor.
Given the busy and dynamic nature of a port environment, DML is on hand to provide other hydrographic support and advice including wider joint venture harbour surveys for research, recreational and local government use, updating of notices to mariners, assistance in emergency response situations and the management of a variety of stakeholder relationships.
DML has been providing contract hydrographic survey support and services since 2005. The contract services are supervised by senior IHO Cat A Surveyor/s. DML has established a long term relationship with POTL built on trust and exceptional customer service.