The boat - Shenandoah - was also a Confederate ship that plagued the Yankees in the American Civil War - see the story in a great song by Mike Campbell and also a wiki link to the story..

Tim Radford
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Shenandoah Roll On Home
by Mike Campbell 2004

I am a Confederate sailor man,
Roll on Shenandoah.
I'll fight them Yankees wherever I can,
Roll on Shenandoah.
In eighteen hundred and sixty-four,
We bought from England a ship of war,
We named our ship the Shenandoah,
Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home.

Around Good Hope to Australian shores,
Roll on Shenandoah.
We've burned their ships and we'll burn some more,
Roll on Shenandoah.
To Alaska where ice and the sea are one,
Where Yankee whaling songs are sung,
They are no match for this ship's guns.
Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home.

Our Captain Waddell, he is brave and true,
Roll on Shenandoah.
He fought not knowing that the war was through,
Roll on Shenandoah.
Thirty-eight ships as war trophies,
A thousand prisoners taken at sea,
But the war is lost now our ship must flee.
Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home.

We sailed with speed around Cape Horn,
Roll on Shenandoah.
It's death for us all if we try for home,
Roll on Shenandoah.
For too many months we have not touched sand,
Our duty called and we made our stand,
But it's England's shore where we must land.
Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home. 

There are Union ships searching high and low,
Roll on Shenandoah.
Their merchants rail that our ship must go,
Roll on Shenandoah.
They call us pirates and they scream,
If we get caught we'll be hung it seems,
But they'll only catch us in their dreams,
Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home.
Roll on, roll on, Shenandoah roll on home.

https://en.wikipedia.org/wiki/CSS_Shenandoah
https://en.wikipedia.org/wiki/CSS_Shenandoah