Steam locomotives used on the line were mainly restricted to the lightweight U and Q class along with smaller tank locomotives such as WA, WF, F and D classes. The reason being the only turning facilities at Bluff was the "Wye" layout that was part of the wharf's lighter rail access bridges. Only the tank locomotives could use the wharf trackage and they were assisted by a capstan winch system that could pull wagons into position under ship's cranes, Bluff town wharf never having cranes. The small shunters would also assist with handling rakes of wagons to and from the Ocean Beach freezing works.