Nice list, and some interesting new things on there for me to explore...

Although I've known about the SS Richard Montgomery for years, growing up nearby, being interested in local history, and having a father who worked in the local dockyard for years...

It actually wouldn't be the first explosion of that type in the area. HMS Bulwark and Princess Irene both exploded in the Medway Estuary in 1914 and 1915. And in the second case, debris landed as far as 20 miles away...

( https://www.westernfrontassociation.com/world-war-i-articles/the-loss-of-hms-bulwark/)