Basically two principles exist, the parallel quay system and the pier system with piers perpendicular to or at an angle with the shore. T-piers are a mixture of the two systems.

• 基本上讲有两个布局原则:岸壁式码头体系和突堤式码头体系。突堤式码头可和岸边直交或斜交。T型码头是岸壁式码头和突堤式码头的结合。