The American lies upsidedown in the trench cut for the St. Lawrence Seaway. She had a large steel, flat-bottomed hull, a propeller, a rudder and four tall bracing posts which it would drive into the bottom to hold itself stationary while planting explosives or other work such as laying pipe. One of the posts actually had to be cut off about twenty feet above the hull because the freighters were hitting it as they went by.
The bow is upstream (50' depth) and by descending to the deck (65' depth). props are at 50' to 55' depth.
A guide line is normally buoyed immediately east of Black Buoy # 167 on the downstream side of the shipping lane.