The second part comes in on the second beat of the second full measure.

Then you'll see our oars with feathered spray,
As they sparkle in the beam of day,
In our little bark we glide
Swiftly o'er the silent tide

Slower:
In our little bark we glide
Swiftly o'er the silent tide
From yonder lone and rocky shore,
The warrior his heritage to restore

O the warrior's heritage to restore!
And sweet the morning breezes blow,
While thus in measure time we'll row

We'll row, oh we'll row, oh in measure time we'll row!
We'll row, oh we'll row, oh in measure time we'll row!

Capt. Patrick Tayluer
From Songs of the Sailor and Lumberman by William Main Doerflinger (1951, '72, '91)