Time Bandit - Same F/V or different F/V

Hi again folks hope everyone is fine. I have a little question for you all that I hope youz will be able to answer.

I currentl have every series of DC on DVD. Whilst watching all the series 1-7 "back to back" I noticed that from about series 5/6 onwards the Time bandit seams to be a different F/V than previous. I think this because :

Obviously the  Scull and cross bones decals on the F/V however I realise that this could just be a paint job.

The biggest reason why I am lead to think the F/V is different is I have noticed that at the Bow of the vessel at the bottom it sems to have develped a "pinochio nose ", theres a nose on the front of the F/V that seams to have appeared. Has this been adapted/welded/fitted onto the origonal F/V  and what is it ??

Hope youz can help

Bazza ;-) X