If US can attack Iranian nuclear threats with missiles, they can also target ancient Iranian Navy with warships from 1936 ( Hamzeh Class Corvettes - former yachts, rebuilt in 1965 ), but I think US Navy can not target, because US Navy are not prepared to fight with so old and ancient ships -
most possible from wood. Radar can not see wood. See link here -
https://en.wikipedia.org/wiki/List_of_current_ships_of_the_Islamic_Republic_of_Iran_Navy The ship from 1936 has missiles and machine guns. You think they didn't make any ships out of metal back then? I can't find info about that specific ship. I did find though that the first ship with an iron hull was the HMS Warrior launched in 1860. If there were already metal ships, then the 1936 ship could be metal too. It should at least have some metal armor. I think that even if the ship was completely wood and radar didn't work, it shouldn't be too have to find it. You could target it by sight instead of relying on automated systems.