How do I get over the chasm?

Hint 1 of 7:

You will have to swing across the chasm.

Hint 2 of 7:

First, you need restore history in Baghdad, 800 AD.

Hint 3 of 7:

And you need to have convinced Nelson to sail off to Egypt.

Hint 4 of 7:

Did you take Nelson's boarding hook?

Hint 5 of 7:

Use turban from Baghdad to swing across.

Hint 6 of 7:

You need the hook to attach the turban to the strut.