I'd agree with Horror Box. Not flown the 92 but certainly the S-61 and AS332 have limited viz across the cockpit. Obviously 50% of the night time landings would be mine, of the other 50% I'd say I would have 'satisfactory' visual cues only about half of them - So (not scientific I know) but I guess we'd have to throw away about a quarter of all landings, and I often feel when landing offshore that I would like to throw at least that many - Not to mention my own cock-ups !!
In summary, even as an experienced Captain, I am placing a lot of faith in a potentially new, perfectly well trained but inexperienced co-pilot. Whilst I may be able to assess ground speed and rates of descent to see when it has really gone pear-shaped, when they are looking good, that still only gives me a guide that he or she has got it in hand and is making a safe approach to the deck - They could be headed for a crane for all I know, I'm unlikely to be able to see it.