41 I accept the concern expressed by Mr Odgers in reply (pages 999-1000), underpinning part of the objection to this evidence on relevance, but also relevant to discretionary considerations, concerning the failure of any witness, including experts such as Mr Gray and Mr Burns, the metallurgists, to suggest that quality assurance standards were required, ought to have been sought or insisted upon, or might reasonably be expected in the welding of the yacht. Mr McNeill's evidence, it might be said, casts little or no light upon the practical situation in the construction of the yacht, unlike the evidence of Mr Gray. Although this point of the trial is not the time for final pronouncements on the matters identified by the Crown as "particulars" of the absence of any, or adequate, systems, some earlier identified appear not supported by the evidence otherwise admissible. I am of the view ultimately that the evidence the subject of objection does not satisfy s 55 of the Act. Further, both to underline that finding, but perhaps more pertinent to the issue of assessing the probative value of the evidence, there is no evidence of any defect in the hull's operation by reason of the welds examined by Mr Tuck, no evidence of leaking, structural failure, failure of the welds contributing to the failure of any other part of the yacht. There is no evidence that the defects in the welds identified by NDT were either "seal welds" or "structural welds", as discussed by Mr Gray. The prosecution puts this as a matter adverse to the submissions justifying rejection of the evidence. In my view these are matters favourable to the defence objections in the context of assessing the probative value of the evidence and its relevance.