Table 5: Results with different proportion of the shifting berth operation.

Number of ships

Results with different proportion of the shifting-berth operation

0%^{1}

5%^{2}

GAP1^{a}

10%^{3}

GAP2^{b}

15%^{4}

GAP3^{c}

20%^{5}

GAP4^{d}

10

2675

2845

6.36%

3076

13.04%

3224

20.52%

3415

27.66%

15

3952

4205

6.40%

4518

12.53%

4703

19.00%

4961

25.53%

20

5206

5485

5.36%

5824

10.61%

6121

17.58%

6452

23.93%

25

6503

6857

5.44%

7331

11.29%

7715

18.64%

8035

23.56%

30

7951

8381

5.41%

9122

12.84%

9423

18.51%

9731

22.39%

Average

/

/

5.79%

/

12.06%

/

18.85%

/

24.61%

(value of 2 − value of 1)/value of 1 × 100%; (value of 3 − value of 1)/value of 1 × 100%; (value of 4 − value of 1)/value of 1 × 100%; ^{d}(value of 5 − value of 1)/value of 1 × 100%.