My copy of the LP has the footnote:

All the songs - together with their sources and a full bibliography - can be found in a book, 'Canal Songs', by Jon Raven, obtainable from 68 Limes Road, Tettenhall, Wolverhampton. (England)

The words to 'The Manchester Canal' in the DT lead me to think its not the same song requested by Bernard, but is in fact the one identified by Sorcha.

As Little Mo pointed out there should be more verses including the third verse below:

Near Oxford Road the dry dock is to cork and to careen, sir, A chief West India dock is where the pond at Ardwick Green, sir, That is to say, they might have been had these plans been done, sir, And vessels might have anchored there, a full 500 tons, sir,

Chorus:

Tow, Row, Row, Talldi-riddy, ralldi-riddy, Tow, Row, Row,.

Bob vG