It is first planned in Korea, the construction of an immersed tube tunnel across the Gaduk Channel. This research is on the safe navigation plan to prevent any sea-traffic accident from the establishment of the immersed tube tunnel across Gaduck Channel, a specific seaway for safe traffic.
The following investigations must be preceded for the research of the safe navigation plan. There are weather conditions like wind, typhoon, temperature, fog and precipitation, and marine conditions including a tide, ebb and flow. Throughout this sort of study, it became possible to conduct the proper seaways, traffic analysis of ships, and future traffic estimations. For these purposes, marine traffic data were collected such as the marine traffic patterns, vessels' moving directions, and their velocities of the sea traffic on the Gaduck Channel.
The main result is to set up the preliminary conditions for safe marine traffic and its construction, establishing alternative plans for commencement.
Finally, the dredging area was divided into 3-sectors, and the safe navigation plan was applied during the constructions period. The purposes of this research are to investigate marine traffic congestion, to establish temporary seaways and to suggest the optimal safe navigation plans.
Also, the main results of this study are as follows, to decide the correct location of light buoys, and verify the safety of navigation with a vessel-navigation simulation on the temporary seaway.