Table 11 Number of tugboats with different horsepower capabilities in various port areas of Guangzhou.

From: A multi-objective fuzzy programming model for port tugboat scheduling based on the Stackelberg game

Port area

Horsepower type

   
 

1600HP

3000HP

4000HP

5000HP

Above 6000HP

Huangpu

1

4

0

0

0

Xinsha

0

3

1

2

0

Xiaohu

0

0

3

1

0

Nansha

0

0

5

2

3

Total

1

7

9

5

3