Well, if those photos are anything to go by, that raises questions.
Have you secured your Bat1, bat2, both, off master switch and have you fitted the cable that seems to have been removed from the third stud connection? That switch says that you have a domestic battery bank, I can't see one, and when you move aboard you will almost certainly need one - you can't start an XLD with a starting handle. Is the electric fuel pump now properly secured? The BSS demands that it be secured with a very limited degree of movement. Then there is the white three core cable that looks like solid strand domestic house cable, with a thinner red wire connected to it by a check block. Mixing mains and domestic colour coding is rank bad practice and if it is solid core that is another no-no. It could even be a BSS fail. All cables should be multi-strand with a minimum of (I think) 20 strands, although older 14 strand cable will probably do unless it really is a 2000 boat and thus likely to be subject to the RCD/RCR. Also, I can't see a fed cable for the glow plugs, I am not saying it is not there, but if it isn't you may have problems starting it in really cold weather.
I suggest that you take the 2000 date with a pinch of salt and assume it is pre-RCR, so you only need to meet the BSS. You can download the BSS guide from the Boat Safety Scheme website. Read and digest it because it will help ensure any work you do will pass the BSS inspection.