Used Boat Dock and Boat Lifts Available | Pre-Owned All Aluminum Gable Roof Dock Pre-Owned All aluminum frame dock Gable roof Overall size is 18′ X 30′ Boat slip is 10′ X 26′. 4′ X 40′ single span gangway Heavy duty winches and cables to the shore with stainless steel cables. Located on Lake Allatoona. Must have a lake lot to move dock to, dock only no shore space included. Ask A Question SOLD | 40' Steel Gangway for Boat Dock Condition Used: Like New 40′ Steel Gangway for Boat Dock 48″ wide with handrails, composite decking and adjustable wheel kit.