Do you see ropes or boats there?
Yes, there is a boat.
    src        edge_attr  dst
0     0  to the right of   11
1     0   to the left of   10
2     0   to the left of   18
3     0   to the left of   16
4     0   to the left of    3
..  ...              ...  ...
56   27   to the left of   12
57   27  to the right of   14
58   27   to the left of   28
59   28  to the right of   27
60   28  to the right of   13

[61 rows x 3 columns]