Where is the largest dry dock located on Lake Ontario?

The largest dry dock on Lake Ontario is located at Port Weller. This facility is significant because it serves as a major repair and maintenance hub for vessels navigating the Great Lakes and the St. Lawrence Seaway. Port Weller's dry dock is notable for its size, accommodating a range of ship types, which enhances its importance in the region for maritime operations.

Port Weller's strategic position at the entrance to the Welland Canal also makes it an ideal location for shipbuilding and repair services, providing essential support to shipping activities on Lake Ontario and beyond. The other locations mentioned, such as Kingston, Rochester, and Hamilton, may have dry docks, but none compare in size or capability to that of Port Weller, underlining its status as a critical asset in the local shipping and maritime infrastructure.