Deep in the bowels of the SS Jeremiah O’Brien, Shipkeeper Chris Friedenbach speaks tenderly of the sixty year old vessel he maintains. The cavernous space he stands in, thick with the smell of the oil covering every mechanical surface, is still much the same way as it was when the O’Brien was launched in 1943. The O'Brien is a survivor of a class of WWII cargo ships that has all but vanished.