Second story, not mine either-
December 1981 I was living with the current Mr H, and one night, close to xmas, we went to sleep as per usual. Around 2am, I woke him up, screaming my head off, and trying to find the light switch in the dark room (Was a new flat we'd not long moved into). I told him about the dream I'd had which had been so terrifying, it had woke me up screaming, and that desperate search for the light switch. In the dream, I found myself in the sea, in a storm, with men panicking in the water all round, and the wreckage of a boat. There was this very calm, middle aged man who was trying to help people and he turned to me and said words along the lines of "It's OK, you're like me, you're not really here. Hold on to the wreckage, and you'll be alright." And I remember even in the dream, thinking "I'd never think of that for myself." And I looked around, and saw the shoreline and all these xmas lights along the shore. Even though I knew i wasn;t going to drown, the thing was very vivid, and terrifying.
I was busy all the next day and it wasn't til the evening news, we saw about the Penlee lifeboat disaster on the news. Mr H looked at me, and I looked at him - and he knew my account of the night before, and the details of the men in the water, the calm middle aged man, and the xmas lights.
I think it is a coincidence. The statistical odds of dreaming something might happen- and it happening at the same time - are probably not as long odds as you'd think. It was the xmas lights that got me but even so - well it was xmas.
Mr H remembers it as well as I do, to this day. Both of us did not see or hear the news til the following day and had heard or seen none that evening (I rarely watch the news at all, but he's a fan).
The thing that did strike me was, there were women and children also in the water that night and in my dream, I only saw men.
Years later, doing my family tree, I discovered I had an ancestor who in the 19thC was one of only 3 survivors of an accident where 11 people drowned. I read the inquest reports (of my middle aged ancestor giving evidence) and he remarked that he survived because he held onto something in the water - and a man on the shore shouted "Hold thy hold, lad!" This is in black and white and in a newspaper from over 180 years ago - an account I had no way of reading til the 2000s. Mr H also was shaken when he first read this - one of the first things that came to his mind was the dream I had, back in 1981.
Still, despite this, I think it was a statistical probability that I might be the descendant of a survivor of drowning, who survived by holding onto something, and dreamt of a lot of people drowning, but was told to hold on to something!
It is creepy but thankfully I only had one similar bad dream after that and then none since.
ETA: Looking back, I think I was more nonplussed at the time by the fact there were women in the accident but none in my dream, and also I kept wondering who that man was, and why 'he' wasn't on the news! It was the xmas lights along the shore that really freaked me out. To this day I find xmas lights creepy and horrible.