Anyone out there got any parts for one of these?

I have just recently Inherited one of these, from an elderly friend.
It was built back In the 1970's but It was never finished, due to a burglary and the thieves taking the last few parts needed to finish It, like handrails, front searchlight and looks like some mast gear and maybe even more bits than I realise at the moment.

I am trying to restore It to Its former glory as It has just been left In a shed and not used much. I am hoping to bring It back to life In memory of Its former owner and get It on the lake, so does anyone have anything that would help?

Cheers.