My grandfather on my dad's side built LSTs in the first half of the 1940s at Kaiser shipyards near Vancouver WA. Had a childhood dentist who owned a Liberty ship he'd converted to a tuna fishing boat. Would love a landing craft.
My neighbor back in Rhode Island owned one and i got to ride in it once and that Detroit sure did scream and it was sloooow as fuck. His family owned a tiny island in Narragansett Bay that had 6 or 7 houses on it and he used the landing craft to shuttle trash, supplies and propane tanks to and from the island and whatever equipment they needed.