Messing about on the canal

I've now got an earworm - for those of you are too young to remember the song "Messing about on the river" (Josh Macrae):-
When the weather is fine then you know it's a sign
For messing about on the river.
If you take my advice there's nothing so nice
As messing about on the river.
There are long boats and short boats and all sorts of craft,
And cruisers and keel boats and some with no draught.
So take off your coat and hop in a boat 
Go messing about on the river. 
This, however is the canal, but it doesn't go as well in the song. 
So I'll leave you right now to cast off your bow,
Go messing about on the river.