Ship impact
The Southern coastline of Korea has a large volume of sea going traffic including containerships, gas and oil tankers. Militarily it is an important and strategic area. Overall design of the Busan-Geoje Fixed Link Project considered loadings from impact and sinking of a 50,000 ton vessel sailing to a neighbouring port. A particular safety feature is that the minimum clearance from sea level to the top of tunnel’s rock protection is more than 20m, which is well in excess of the 15m maximum draft of a 50,000 ton vessel.