Hi. Been off the puter for a few weeks so if this is redundant sorry in advance. But on the Titanic Channel there is a segment on "Rockets at Sea". It answered a lot of the questions I had originally. It is pretty good. The only thing I didn't get was the presenter if I heard right said that after Titanic it was agreed that red rockets to be used only for distress. I thought that wasn't decided for years after Titanic...like 25 years or so later. A minor point I know. It is a good segment to watch.