From paragraph 2 we deduce that

✂️ a) operating a tug was like playing with toys.

✂️ b) shifting directions was a risky move.

✂️ c) it was an easy operation to reverse direction.

✂️ d) the tug engine was mechanically fed with coal.

✂️ e) tugs ran the risk of drifting when reversing direction.

Responda: From paragraph 2 we deduce that