I will see your Eastland and raise you the even more obscure sinking of Mississippi steamboat Sultana in 1865. Loss of life between 1168 and 1547. It's the worst maritime disaster in US history (the Titanic was an British ship in international waters with an international passenger list).

The reason you've never heard of it is because Abraham Lincoln was assassinated the day before, an event that sucked up all the nations newsprint and popular attention.

There is a pretty good documentary on it on one of the big streaming services.

https://en.wikipedia.org/wiki/List_of_maritime_disasters_in_...