Survey team participated in a seminar on water depth surveying technology (CHC Marine Day) with topics such as: - Technology for water depth surveying using automated survey vessels (USV) equipped with Single Beam Echo Sounder. - Technology for water depth surveying using automated survey vessels (USV) equipped with Multi-beam systems. - Comparison of data differences between Single Beam and Multi-beam. - Application of Echo Sounder data in conjunction with LiDAR survey technology data. Demonstration of the operation of the automated water depth surveying system, CHC brand model Apache 4+ Multibeam. - Hands-on experience with a GNSS satellite signal receiver with positioning functions from images, and using cameras for AR stake-out planning."

Explain the different types of failure modes that may occur. Explain the principles of calculation and the code used for calculating connection points. Criteria for selecting anchors and precautions when using each type of anchor. Explain the process of drilling and inserting steel and the various requirements for calculations. Explain the principles for calculating the depth of steel drilling according to the code. Explain the comparison of specifications of different models or brands of materials