Jim Currie
Member
The problem I have, with that Brad, is that the closely spaced, small diameter holes in the photograph supplied by Aaron are in the main, fire tubes. The main boiler stays were heavier, of larger diameter and more widely spaced. The reason for that was because they were contained within the steam space where the pressure was greatest. These heavy tubes braced the boiler ends. The enclosed compartment could withstand pressures in excess of 400 psi. That's getting close to a depth of 1000 feet.Side note: having looked at the pictures some more, it seems like the only imploded area was of the stay tubes...???
In almost every picture of boilers on the sea bed, the heavy boiler stays ar still in position, despite corrosion.
There is, in fact a picture of a single end boiler on the sea bed standing on end with the furnace doors pointing upward. I do not know how much of that is below the mud line but there is approximately10.5 feet of it standing proud of the sea bed. See here:
It looks to me that the external stay seciring nuts are missing or corroded away and the steam chamber end plate has been pulled in, suggesting that a force pulled on the stays.
Aaron:
I had a look at that video. They seem to be trying to tie-in Lightoller's adventure with the fidley grill and some kind of explosion. Don't think so. Think about one of those pump action water guns the kids have. Then think about a sudden inundation of the trunkways serving the fidley in front of No.1 funnel.