Who will sail to England with us?
England is closed, the key is broken
Is there no carpenter who can fix the key?
Let through, let through!
Who is behind must go in front!
The most common explanation: the rhyme refers to the 1667 Medway incident (2)
Th Dutch sailed up the Medway - which at a strategic point had an enormous chain from bank to bank - after a searing defeat by the British. They snuck up the river, cut the chain & managed to nick the British Fleets' flagship The Royal Charles. (3)