Analysis of Roll Along Home!

I though I heard the old man say -
'Aye, aye, roll along home! -
Bound home for old England we're sailing to-day -
Heave up the anchor and roll along home!
The pilot's aboard and the capstan is manned,
Blue Peter's a-waving farewell to the land,
For after long waiting our orders have come
To heave up the anchor and roll along home -
Roll - roll along home!'

The sails they are bent and the cargo is stowed -
Aye, aye, roll along home! -
And far will her way be and lonely her road -
Shake out the topsails and roll along home!
Yes, long is the road through the storm and the shine
That brings me back home to you, true love of mine;
No longer I'll wander, no further I'll roam,
But shake out my topsails and roll along home -
Roll - roll along home!'