The lock gates at Hull Marina are currently inoperative due to a fault with the gates.
From their Facebook page:
"It is with sincere regret that due to severe
mechanical lock failure on the eastern inner gate, that for reasons of safety
we shall not be operating the lock gates until further notice.
We have been working with the council who plan on sending divers down ASAP to
inspect the extent of the damage and then formulate a plan to repair."
The last time the lock was shut for this type of repair it was shut for around 12 weeks. If that is the case this time it could be a long and frustrating season for some people locked up in the marina. No doubt this will be scuppering plenty of bank holiday plans!