En'light'enment

Do you know your 'futtock' from your 'jossle'? Well I certainly didn't before today. I have just started a FutureLearn free online course entitled 'Marine Archaeology' and one of the first things we are learning is the naming of parts of boats. This diagram shows the 'futtock' - I'll leave it to you to find out which part is the jossle.
If you are interested, you can join the course here: https://www.futurelearn.com/courses/shipwrecks/4/steps/60313