For one wild moment there, Dave, when I read your second paragraph, I thought you meant you'd had a website in 1969. Such precocity - I thought for a moment we'd discovered the real architect of the Net.
Then I spotted the "that's".
This 'mystery' ship business is of enduring interest, isn't it? But it seems to me that the problem is one can only track and analyse the more mainstream and organised shipping line data. In 1912, there must have been some ships in the rough vicinity, whose records were either never properly kept at the time, or which have been lost over the years.
And since the Inquiries on both sides of the Atlantic were somewhat less rigorous than we would now be, in tracking down the traffic in the area - being happy with the Californian as the culprit - it is quite a detective task. Personally, I think the latter did see the rockets, but was not the ship seen from the Titanic.
But what do I know?