S Ann Arbor No. 4 with the "S S" standing for steamship. It ultimately received the name S S Pere Marquette 16 when F & PM's new numbering system took place in 1901. The system started with the number 15. At that time there was already an order for a new all-steel ferry that was placed with Logan in 1895. This boat while in construction had been referred to as the No. 15 as it was the first in a series of boats designed by Logan. The Pere Marquette Railway company ordered in 1901 a steel ferry from American Shipbuilding Company to be designed by Logan. it was the first freighter for the new railway. F & PM was pleased with the performance of their first steel ferry constructed by the naval architect in 1896. This second steel boat ordered from Logan of American Shipbuilding received the designation S S Pere Marquette 17 since the number 16 had already been taken. This steamship was an upgraded version from the previous Logan boat and it was long, wide, and had a depth of to the main deck. This steamship was constructed with extra strength metal parts and lavish luxury accommodations and had triple expansion engines powered by four boilers like those on the modern Scottish ships at the time. They were high and in diameter and generated per square inch of steam pressure producing . The transport ship could carry thirty standard railroad freight cars on its four-track internal platform and had luxury passenger staterooms with better facilities than the first Logan launch. The vessel was 2,775 gross tons and officially registered as US #150906. The third railroad train car ferry ordered from Logan, designated SS Pere Marquette No. 18, was launched at the Cleveland shipyard dock of the American Shipbuilding Company on August 1, 1902. She was christened by Beatrice Logan, the daughter of Robert Logan, who was the design engineer of the all-steel vessel. The new steamship was long, in beam, and had a depth of from keel to top of the shell plating. She had six boilers and triple expansion twin engines. The engines were triple compound vertical jet condensing and were equipped with air and cooler pumps. All the engine parts, including shafts and propellers, were extra heavy duty for service in working through the thick lake ice. The boilers worked at a pressure of . They