It would be... Well just plain wrong of me not to say a word or two about the locks on the Nene. Not that I am any expert but they are, well different and on first meeting them, they can look daunting. In fact, they are easy to operate and well maintained. AND .. If you see the EA working at a lock there is a 98% chance they will stop and work it for you!
All locks have familiar looking gates at the top. But these beasts are at the bottom of the vast majority of locks.
Help from the EA and a spot of cleaning